20215390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6761}}^1$

素因数の和:6804

約数の個数: 32

約数和(自身を含む): 40896576

約数和(自身を除く): 20681186

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6761, 13522, 33805, 67610, 87893, 155503, 175786, 311006, 439465, 777515, 878930, 1555030, 2021539, 4043078, 10107695, 20215390]

約数ペア:

[(1, 20215390), (2, 10107695), (5, 4043078), (10, 2021539), (13, 1555030), (23, 878930), (26, 777515), (46, 439465), (65, 311006), (115, 175786), (130, 155503), (230, 87893), (299, 67610), (598, 33805), (1495, 13522), (2990, 6761)]