21328060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82031}}^1$

素因数の和:82053

約数の個数: 24

約数和(自身を含む): 48234816

約数和(自身を除く): 26906756

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82031, 164062, 328124, 410155, 820310, 1066403, 1640620, 2132806, 4265612, 5332015, 10664030, 21328060]

約数ペア:

[(1, 21328060), (2, 10664030), (4, 5332015), (5, 4265612), (10, 2132806), (13, 1640620), (20, 1066403), (26, 820310), (52, 410155), (65, 328124), (130, 164062), (260, 82031)]