28418780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109303}}^1$

素因数の和:109325

約数の個数: 24

約数和(自身を含む): 64270752

約数和(自身を除く): 35851972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109303, 218606, 437212, 546515, 1093030, 1420939, 2186060, 2841878, 5683756, 7104695, 14209390, 28418780]

約数ペア:

[(1, 28418780), (2, 14209390), (4, 7104695), (5, 5683756), (10, 2841878), (13, 2186060), (20, 1420939), (26, 1093030), (52, 546515), (65, 437212), (130, 218606), (260, 109303)]