18634720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1$

素因数の和:93

約数の個数: 144

約数和(自身を含む): 51988608

約数和(自身を除く): 33353888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 31, 32, 34, 40, 52, 62, 65, 68, 80, 85, 104, 124, 130, 136, 155, 160, 170, 208, 221, 248, 260, 272, 289, 310, 340, 403, 416, 442, 496, 520, 527, 544, 578, 620, 680, 806, 884, 992, 1040, 1054, 1105, 1156, 1240, 1360, 1445, 1612, 1768, 2015, 2080, 2108, 2210, 2312, 2480, 2635, 2720, 2890, 3224, 3536, 3757, 4030, 4216, 4420, 4624, 4960, 5270, 5780, 6448, 6851, 7072, 7514, 8060, 8432, 8840, 8959, 9248, 10540, 11560, 12896, 13702, 15028, 16120, 16864, 17680, 17918, 18785, 21080, 23120, 27404, 30056, 32240, 34255, 35360, 35836, 37570, 42160, 44795, 46240, 54808, 60112, 64480, 68510, 71672, 75140, 84320, 89590, 109616, 116467, 120224, 137020, 143344, 150280, 179180, 219232, 232934, 274040, 286688, 300560, 358360, 465868, 548080, 582335, 601120, 716720, 931736, 1096160, 1164670, 1433440, 1863472, 2329340, 3726944, 4658680, 9317360, 18634720]

約数ペア:

[(1, 18634720), (2, 9317360), (4, 4658680), (5, 3726944), (8, 2329340), (10, 1863472), (13, 1433440), (16, 1164670), (17, 1096160), (20, 931736), (26, 716720), (31, 601120), (32, 582335), (34, 548080), (40, 465868), (52, 358360), (62, 300560), (65, 286688), (68, 274040), (80, 232934), (85, 219232), (104, 179180), (124, 150280), (130, 143344), (136, 137020), (155, 120224), (160, 116467), (170, 109616), (208, 89590), (221, 84320), (248, 75140), (260, 71672), (272, 68510), (289, 64480), (310, 60112), (340, 54808), (403, 46240), (416, 44795), (442, 42160), (496, 37570), (520, 35836), (527, 35360), (544, 34255), (578, 32240), (620, 30056), (680, 27404), (806, 23120), (884, 21080), (992, 18785), (1040, 17918), (1054, 17680), (1105, 16864), (1156, 16120), (1240, 15028), (1360, 13702), (1445, 12896), (1612, 11560), (1768, 10540), (2015, 9248), (2080, 8959), (2108, 8840), (2210, 8432), (2312, 8060), (2480, 7514), (2635, 7072), (2720, 6851), (2890, 6448), (3224, 5780), (3536, 5270), (3757, 4960), (4030, 4624), (4216, 4420)]