28021015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1303}}^1$

素因数の和:1359

約数の個数: 32

約数和(自身を含む): 40559616

約数和(自身を除く): 12538601

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1303, 1955, 4301, 6515, 14333, 21505, 22151, 29969, 71665, 110755, 149845, 243661, 329659, 509473, 1218305, 1648295, 2547365, 5604203, 28021015]

約数ペア:

[(1, 28021015), (5, 5604203), (11, 2547365), (17, 1648295), (23, 1218305), (55, 509473), (85, 329659), (115, 243661), (187, 149845), (253, 110755), (391, 71665), (935, 29969), (1265, 22151), (1303, 21505), (1955, 14333), (4301, 6515)]