638406145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{2273}}^1$

素因数の和:2469

約数の個数: 32

約数和(自身を含む): 859572000

約数和(自身を除く): 221165855

約数列:

[1, 5, 13, 29, 65, 145, 149, 377, 745, 1885, 1937, 2273, 4321, 9685, 11365, 21605, 29549, 56173, 65917, 147745, 280865, 329585, 338677, 856921, 1693385, 4284605, 4402801, 9821633, 22014005, 49108165, 127681229, 638406145]

約数ペア:

[(1, 638406145), (5, 127681229), (13, 49108165), (29, 22014005), (65, 9821633), (145, 4402801), (149, 4284605), (377, 1693385), (745, 856921), (1885, 338677), (1937, 329585), (2273, 280865), (4321, 147745), (9685, 65917), (11365, 56173), (21605, 29549)]