153640985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 203744160

約数和(自身を除く): 50103175

約数列:

[1, 5, 17, 29, 85, 145, 157, 397, 493, 785, 1985, 2465, 2669, 4553, 6749, 11513, 13345, 22765, 33745, 57565, 62329, 77401, 195721, 311645, 387005, 978605, 1059593, 1807541, 5297965, 9037705, 30728197, 153640985]

約数ペア:

[(1, 153640985), (5, 30728197), (17, 9037705), (29, 5297965), (85, 1807541), (145, 1059593), (157, 978605), (397, 387005), (493, 311645), (785, 195721), (1985, 77401), (2465, 62329), (2669, 57565), (4553, 33745), (6749, 22765), (11513, 13345)]