81371776

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{20507}}^1$

素因数の和:20552

約数の個数: 32

約数和(自身を含む): 167345280

約数和(自身を除く): 85973504

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 20507, 41014, 82028, 164056, 328112, 635717, 656224, 1271434, 1312448, 2542868, 2624896, 5085736, 10171472, 20342944, 40685888, 81371776]

約数ペア:

[(1, 81371776), (2, 40685888), (4, 20342944), (8, 10171472), (16, 5085736), (31, 2624896), (32, 2542868), (62, 1312448), (64, 1271434), (124, 656224), (128, 635717), (248, 328112), (496, 164056), (992, 82028), (1984, 41014), (3968, 20507)]