1407220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 2999808

約数和(自身を除く): 1592588

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 991, 1420, 1982, 3964, 4955, 9910, 19820, 70361, 140722, 281444, 351805, 703610, 1407220]

約数ペア:

[(1, 1407220), (2, 703610), (4, 351805), (5, 281444), (10, 140722), (20, 70361), (71, 19820), (142, 9910), (284, 4955), (355, 3964), (710, 1982), (991, 1420)]