20199644440

素因数分解:

$2^3\times 5^1\times {\mathrm{3391}}^1\times {\mathrm{148921}}^1$

素因数の和:152323

約数の個数: 32

約数和(自身を含む): 45462908160

約数和(自身を除く): 25263263720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3391, 6782, 13564, 16955, 27128, 33910, 67820, 135640, 148921, 297842, 595684, 744605, 1191368, 1489210, 2978420, 5956840, 504991111, 1009982222, 2019964444, 2524955555, 4039928888, 5049911110, 10099822220, 20199644440]

約数ペア:

[(1, 20199644440), (2, 10099822220), (4, 5049911110), (5, 4039928888), (8, 2524955555), (10, 2019964444), (20, 1009982222), (40, 504991111), (3391, 5956840), (6782, 2978420), (13564, 1489210), (16955, 1191368), (27128, 744605), (33910, 595684), (67820, 297842), (135640, 148921)]