81601000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6277}}^1$

素因数の和:6311

約数の個数: 64

約数和(自身を含む): 205667280

約数和(自身を除く): 124066280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1625, 2600, 3250, 6277, 6500, 12554, 13000, 25108, 31385, 50216, 62770, 81601, 125540, 156925, 163202, 251080, 313850, 326404, 408005, 627700, 652808, 784625, 816010, 1255400, 1569250, 1632020, 2040025, 3138500, 3264040, 4080050, 6277000, 8160100, 10200125, 16320200, 20400250, 40800500, 81601000]

約数ペア:

[(1, 81601000), (2, 40800500), (4, 20400250), (5, 16320200), (8, 10200125), (10, 8160100), (13, 6277000), (20, 4080050), (25, 3264040), (26, 3138500), (40, 2040025), (50, 1632020), (52, 1569250), (65, 1255400), (100, 816010), (104, 784625), (125, 652808), (130, 627700), (200, 408005), (250, 326404), (260, 313850), (325, 251080), (500, 163202), (520, 156925), (650, 125540), (1000, 81601), (1300, 62770), (1625, 50216), (2600, 31385), (3250, 25108), (6277, 13000), (6500, 12554)]