28218710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1657}}^1$

素因数の和:1808

約数の個数: 32

約数和(自身を含む): 55151712

約数和(自身を除く): 26933002

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1310, 1657, 1703, 3314, 3406, 8285, 8515, 16570, 17030, 21541, 43082, 107705, 215410, 217067, 434134, 1085335, 2170670, 2821871, 5643742, 14109355, 28218710]

約数ペア:

[(1, 28218710), (2, 14109355), (5, 5643742), (10, 2821871), (13, 2170670), (26, 1085335), (65, 434134), (130, 217067), (131, 215410), (262, 107705), (655, 43082), (1310, 21541), (1657, 17030), (1703, 16570), (3314, 8515), (3406, 8285)]