128289100

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{21031}}^1$

素因数の和:21106

約数の個数: 36

約数和(自身を含む): 282964528

約数和(自身を除く): 154675428

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 6100, 21031, 42062, 84124, 105155, 210310, 420620, 525775, 1051550, 1282891, 2103100, 2565782, 5131564, 6414455, 12828910, 25657820, 32072275, 64144550, 128289100]

約数ペア:

[(1, 128289100), (2, 64144550), (4, 32072275), (5, 25657820), (10, 12828910), (20, 6414455), (25, 5131564), (50, 2565782), (61, 2103100), (100, 1282891), (122, 1051550), (244, 525775), (305, 420620), (610, 210310), (1220, 105155), (1525, 84124), (3050, 42062), (6100, 21031)]