81345400

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4027}}^1$

素因数の和:4144

約数の個数: 48

約数和(自身を含む): 191048040

約数和(自身を除く): 109702640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 2020, 2525, 4027, 4040, 5050, 8054, 10100, 16108, 20135, 20200, 32216, 40270, 80540, 100675, 161080, 201350, 402700, 406727, 805400, 813454, 1626908, 2033635, 3253816, 4067270, 8134540, 10168175, 16269080, 20336350, 40672700, 81345400]

約数ペア:

[(1, 81345400), (2, 40672700), (4, 20336350), (5, 16269080), (8, 10168175), (10, 8134540), (20, 4067270), (25, 3253816), (40, 2033635), (50, 1626908), (100, 813454), (101, 805400), (200, 406727), (202, 402700), (404, 201350), (505, 161080), (808, 100675), (1010, 80540), (2020, 40270), (2525, 32216), (4027, 20200), (4040, 20135), (5050, 16108), (8054, 10100)]