256660560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1613}}^1$

素因数の和:1662

約数の個数: 240

約数和(自身を含む): 983468304

約数和(自身を除く): 726807744

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 136, 144, 153, 156, 170, 180, 195, 204, 208, 221, 234, 240, 255, 260, 272, 306, 312, 340, 360, 390, 408, 442, 468, 510, 520, 585, 612, 624, 663, 680, 720, 765, 780, 816, 884, 936, 1020, 1040, 1105, 1170, 1224, 1326, 1360, 1530, 1560, 1613, 1768, 1872, 1989, 2040, 2210, 2340, 2448, 2652, 3060, 3120, 3226, 3315, 3536, 3978, 4080, 4420, 4680, 4839, 5304, 6120, 6452, 6630, 7956, 8065, 8840, 9360, 9678, 9945, 10608, 12240, 12904, 13260, 14517, 15912, 16130, 17680, 19356, 19890, 20969, 24195, 25808, 26520, 27421, 29034, 31824, 32260, 38712, 39780, 41938, 48390, 53040, 54842, 58068, 62907, 64520, 72585, 77424, 79560, 82263, 83876, 96780, 104845, 109684, 116136, 125814, 129040, 137105, 145170, 159120, 164526, 167752, 188721, 193560, 209690, 219368, 232272, 246789, 251628, 274210, 290340, 314535, 329052, 335504, 356473, 377442, 387120, 411315, 419380, 438736, 493578, 503256, 548420, 580680, 629070, 658104, 712946, 754884, 822630, 838760, 943605, 987156, 1006512, 1069419, 1096840, 1161360, 1233945, 1258140, 1316208, 1425892, 1509768, 1645260, 1677520, 1782365, 1887210, 1974312, 2138838, 2193680, 2467890, 2516280, 2851784, 3019536, 3208257, 3290520, 3564730, 3774420, 3948624, 4277676, 4935780, 5032560, 5347095, 5703568, 6416514, 6581040, 7129460, 7548840, 8555352, 9871560, 10694190, 12833028, 14258920, 15097680, 16041285, 17110704, 19743120, 21388380, 25666056, 28517840, 32082570, 42776760, 51332112, 64165140, 85553520, 128330280, 256660560]

約数ペア:

[(1, 256660560), (2, 128330280), (3, 85553520), (4, 64165140), (5, 51332112), (6, 42776760), (8, 32082570), (9, 28517840), (10, 25666056), (12, 21388380), (13, 19743120), (15, 17110704), (16, 16041285), (17, 15097680), (18, 14258920), (20, 12833028), (24, 10694190), (26, 9871560), (30, 8555352), (34, 7548840), (36, 7129460), (39, 6581040), (40, 6416514), (45, 5703568), (48, 5347095), (51, 5032560), (52, 4935780), (60, 4277676), (65, 3948624), (68, 3774420), (72, 3564730), (78, 3290520), (80, 3208257), (85, 3019536), (90, 2851784), (102, 2516280), (104, 2467890), (117, 2193680), (120, 2138838), (130, 1974312), (136, 1887210), (144, 1782365), (153, 1677520), (156, 1645260), (170, 1509768), (180, 1425892), (195, 1316208), (204, 1258140), (208, 1233945), (221, 1161360), (234, 1096840), (240, 1069419), (255, 1006512), (260, 987156), (272, 943605), (306, 838760), (312, 822630), (340, 754884), (360, 712946), (390, 658104), (408, 629070), (442, 580680), (468, 548420), (510, 503256), (520, 493578), (585, 438736), (612, 419380), (624, 411315), (663, 387120), (680, 377442), (720, 356473), (765, 335504), (780, 329052), (816, 314535), (884, 290340), (936, 274210), (1020, 251628), (1040, 246789), (1105, 232272), (1170, 219368), (1224, 209690), (1326, 193560), (1360, 188721), (1530, 167752), (1560, 164526), (1613, 159120), (1768, 145170), (1872, 137105), (1989, 129040), (2040, 125814), (2210, 116136), (2340, 109684), (2448, 104845), (2652, 96780), (3060, 83876), (3120, 82263), (3226, 79560), (3315, 77424), (3536, 72585), (3978, 64520), (4080, 62907), (4420, 58068), (4680, 54842), (4839, 53040), (5304, 48390), (6120, 41938), (6452, 39780), (6630, 38712), (7956, 32260), (8065, 31824), (8840, 29034), (9360, 27421), (9678, 26520), (9945, 25808), (10608, 24195), (12240, 20969), (12904, 19890), (13260, 19356), (14517, 17680), (15912, 16130)]