21115691090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2221}}^1\times {\mathrm{73133}}^1$

素因数の和:75374

約数の個数: 32

約数和(自身を含む): 40950944496

約数和(自身を除く): 19835253406

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 2221, 4442, 11105, 22210, 28873, 57746, 73133, 144365, 146266, 288730, 365665, 731330, 950729, 1901458, 4753645, 9507290, 162428393, 324856786, 812141965, 1624283930, 2111569109, 4223138218, 10557845545, 21115691090]

約数ペア:

[(1, 21115691090), (2, 10557845545), (5, 4223138218), (10, 2111569109), (13, 1624283930), (26, 812141965), (65, 324856786), (130, 162428393), (2221, 9507290), (4442, 4753645), (11105, 1901458), (22210, 950729), (28873, 731330), (57746, 365665), (73133, 288730), (144365, 146266)]