21715390

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 40247424

約数和(自身を除く): 18532034

約数列:

[1, 2, 5, 10, 61, 97, 122, 194, 305, 367, 485, 610, 734, 970, 1835, 3670, 5917, 11834, 22387, 29585, 35599, 44774, 59170, 71198, 111935, 177995, 223870, 355990, 2171539, 4343078, 10857695, 21715390]

約数ペア:

[(1, 21715390), (2, 10857695), (5, 4343078), (10, 2171539), (61, 355990), (97, 223870), (122, 177995), (194, 111935), (305, 71198), (367, 59170), (485, 44774), (610, 35599), (734, 29585), (970, 22387), (1835, 11834), (3670, 5917)]