21693360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:455

約数の個数: 160

約数和(自身を含む): 76870080

約数和(自身を除く): 55176720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 17, 20, 24, 26, 30, 34, 39, 40, 48, 51, 52, 60, 65, 68, 78, 80, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 208, 221, 240, 255, 260, 272, 312, 340, 390, 408, 409, 442, 510, 520, 624, 663, 680, 780, 816, 818, 884, 1020, 1040, 1105, 1227, 1326, 1360, 1560, 1636, 1768, 2040, 2045, 2210, 2454, 2652, 3120, 3272, 3315, 3536, 4080, 4090, 4420, 4908, 5304, 5317, 6135, 6544, 6630, 6953, 8180, 8840, 9816, 10608, 10634, 12270, 13260, 13906, 15951, 16360, 17680, 19632, 20859, 21268, 24540, 26520, 26585, 27812, 31902, 32720, 34765, 41718, 42536, 49080, 53040, 53170, 55624, 63804, 69530, 79755, 83436, 85072, 90389, 98160, 104295, 106340, 111248, 127608, 139060, 159510, 166872, 180778, 208590, 212680, 255216, 271167, 278120, 319020, 333744, 361556, 417180, 425360, 451945, 542334, 556240, 638040, 723112, 834360, 903890, 1084668, 1276080, 1355835, 1446224, 1668720, 1807780, 2169336, 2711670, 3615560, 4338672, 5423340, 7231120, 10846680, 21693360]

約数ペア:

[(1, 21693360), (2, 10846680), (3, 7231120), (4, 5423340), (5, 4338672), (6, 3615560), (8, 2711670), (10, 2169336), (12, 1807780), (13, 1668720), (15, 1446224), (16, 1355835), (17, 1276080), (20, 1084668), (24, 903890), (26, 834360), (30, 723112), (34, 638040), (39, 556240), (40, 542334), (48, 451945), (51, 425360), (52, 417180), (60, 361556), (65, 333744), (68, 319020), (78, 278120), (80, 271167), (85, 255216), (102, 212680), (104, 208590), (120, 180778), (130, 166872), (136, 159510), (156, 139060), (170, 127608), (195, 111248), (204, 106340), (208, 104295), (221, 98160), (240, 90389), (255, 85072), (260, 83436), (272, 79755), (312, 69530), (340, 63804), (390, 55624), (408, 53170), (409, 53040), (442, 49080), (510, 42536), (520, 41718), (624, 34765), (663, 32720), (680, 31902), (780, 27812), (816, 26585), (818, 26520), (884, 24540), (1020, 21268), (1040, 20859), (1105, 19632), (1227, 17680), (1326, 16360), (1360, 15951), (1560, 13906), (1636, 13260), (1768, 12270), (2040, 10634), (2045, 10608), (2210, 9816), (2454, 8840), (2652, 8180), (3120, 6953), (3272, 6630), (3315, 6544), (3536, 6135), (4080, 5317), (4090, 5304), (4420, 4908)]