21019108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12911}}^1$

素因数の和:12963

約数の個数: 24

約数和(自身を含む): 41215104

約数和(自身を除く): 20195996

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12911, 25822, 51644, 142021, 284042, 477707, 568084, 955414, 1910828, 5254777, 10509554, 21019108]

約数ペア:

[(1, 21019108), (2, 10509554), (4, 5254777), (11, 1910828), (22, 955414), (37, 568084), (44, 477707), (74, 284042), (148, 142021), (407, 51644), (814, 25822), (1628, 12911)]