81637984

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:276

約数の個数: 72

約数和(自身を含む): 175125888

約数和(自身を除く): 93487904

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 191, 296, 304, 361, 382, 592, 608, 703, 722, 764, 1184, 1406, 1444, 1528, 2812, 2888, 3056, 3629, 5624, 5776, 6112, 7067, 7258, 11248, 11552, 13357, 14134, 14516, 22496, 26714, 28268, 29032, 53428, 56536, 58064, 68951, 106856, 113072, 116128, 134273, 137902, 213712, 226144, 268546, 275804, 427424, 537092, 551608, 1074184, 1103216, 2148368, 2206432, 2551187, 4296736, 5102374, 10204748, 20409496, 40818992, 81637984]

約数ペア:

[(1, 81637984), (2, 40818992), (4, 20409496), (8, 10204748), (16, 5102374), (19, 4296736), (32, 2551187), (37, 2206432), (38, 2148368), (74, 1103216), (76, 1074184), (148, 551608), (152, 537092), (191, 427424), (296, 275804), (304, 268546), (361, 226144), (382, 213712), (592, 137902), (608, 134273), (703, 116128), (722, 113072), (764, 106856), (1184, 68951), (1406, 58064), (1444, 56536), (1528, 53428), (2812, 29032), (2888, 28268), (3056, 26714), (3629, 22496), (5624, 14516), (5776, 14134), (6112, 13357), (7067, 11552), (7258, 11248)]