28378870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{521}}^1$

素因数の和:960

約数の個数: 32

約数和(自身を含む): 55248480

約数和(自身を除く): 26869610

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 419, 521, 838, 1042, 2095, 2605, 4190, 5210, 5447, 6773, 10894, 13546, 27235, 33865, 54470, 67730, 218299, 436598, 1091495, 2182990, 2837887, 5675774, 14189435, 28378870]

約数ペア:

[(1, 28378870), (2, 14189435), (5, 5675774), (10, 2837887), (13, 2182990), (26, 1091495), (65, 436598), (130, 218299), (419, 67730), (521, 54470), (838, 33865), (1042, 27235), (2095, 13546), (2605, 10894), (4190, 6773), (5210, 5447)]