21615505705

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1\times {\mathrm{11117}}^1$

素因数の和:11449

約数の個数: 32

約数和(自身を含む): 27718508160

約数和(自身を除く): 6103002455

約数列:

[1, 5, 19, 95, 97, 211, 485, 1055, 1843, 4009, 9215, 11117, 20045, 20467, 55585, 102335, 211223, 388873, 1056115, 1078349, 1944365, 2345687, 5391745, 11728435, 20488631, 44568053, 102443155, 222840265, 227531639, 1137658195, 4323101141, 21615505705]

約数ペア:

[(1, 21615505705), (5, 4323101141), (19, 1137658195), (95, 227531639), (97, 222840265), (211, 102443155), (485, 44568053), (1055, 20488631), (1843, 11728435), (4009, 5391745), (9215, 2345687), (11117, 1944365), (20045, 1078349), (20467, 1056115), (55585, 388873), (102335, 211223)]