991160

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 2268000

約数和(自身を除く): 1276840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 349, 355, 568, 698, 710, 1396, 1420, 1745, 2792, 2840, 3490, 6980, 13960, 24779, 49558, 99116, 123895, 198232, 247790, 495580, 991160]

約数ペア:

[(1, 991160), (2, 495580), (4, 247790), (5, 198232), (8, 123895), (10, 99116), (20, 49558), (40, 24779), (71, 13960), (142, 6980), (284, 3490), (349, 2840), (355, 2792), (568, 1745), (698, 1420), (710, 1396)]