21302060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81931}}^1$

素因数の和:81953

約数の個数: 24

約数和(自身を含む): 48176016

約数和(自身を除く): 26873956

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 81931, 163862, 327724, 409655, 819310, 1065103, 1638620, 2130206, 4260412, 5325515, 10651030, 21302060]

約数ペア:

[(1, 21302060), (2, 10651030), (4, 5325515), (5, 4260412), (10, 2130206), (13, 1638620), (20, 1065103), (26, 819310), (52, 409655), (65, 327724), (130, 163862), (260, 81931)]