81077640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{367}}^1$

素因数の和:651

約数の個数: 128

約数和(自身を含む): 279797760

約数和(自身を除く): 198720120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 263, 280, 367, 420, 526, 734, 789, 840, 1052, 1101, 1315, 1468, 1578, 1835, 1841, 2104, 2202, 2569, 2630, 2936, 3156, 3670, 3682, 3945, 4404, 5138, 5260, 5505, 5523, 6312, 7340, 7364, 7707, 7890, 8808, 9205, 10276, 10520, 11010, 11046, 12845, 14680, 14728, 15414, 15780, 18410, 20552, 22020, 22092, 25690, 27615, 30828, 31560, 36820, 38535, 44040, 44184, 51380, 55230, 61656, 73640, 77070, 96521, 102760, 110460, 154140, 193042, 220920, 289563, 308280, 386084, 482605, 579126, 675647, 772168, 965210, 1158252, 1351294, 1447815, 1930420, 2026941, 2316504, 2702588, 2895630, 3378235, 3860840, 4053882, 5405176, 5791260, 6756470, 8107764, 10134705, 11582520, 13512940, 16215528, 20269410, 27025880, 40538820, 81077640]

約数ペア:

[(1, 81077640), (2, 40538820), (3, 27025880), (4, 20269410), (5, 16215528), (6, 13512940), (7, 11582520), (8, 10134705), (10, 8107764), (12, 6756470), (14, 5791260), (15, 5405176), (20, 4053882), (21, 3860840), (24, 3378235), (28, 2895630), (30, 2702588), (35, 2316504), (40, 2026941), (42, 1930420), (56, 1447815), (60, 1351294), (70, 1158252), (84, 965210), (105, 772168), (120, 675647), (140, 579126), (168, 482605), (210, 386084), (263, 308280), (280, 289563), (367, 220920), (420, 193042), (526, 154140), (734, 110460), (789, 102760), (840, 96521), (1052, 77070), (1101, 73640), (1315, 61656), (1468, 55230), (1578, 51380), (1835, 44184), (1841, 44040), (2104, 38535), (2202, 36820), (2569, 31560), (2630, 30828), (2936, 27615), (3156, 25690), (3670, 22092), (3682, 22020), (3945, 20552), (4404, 18410), (5138, 15780), (5260, 15414), (5505, 14728), (5523, 14680), (6312, 12845), (7340, 11046), (7364, 11010), (7707, 10520), (7890, 10276), (8808, 9205)]