21015930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53887}}^1$

素因数の和:53910

約数の個数: 32

約数和(自身を含む): 54319104

約数和(自身を除く): 33303174

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53887, 107774, 161661, 269435, 323322, 538870, 700531, 808305, 1401062, 1616610, 2101593, 3502655, 4203186, 7005310, 10507965, 21015930]

約数ペア:

[(1, 21015930), (2, 10507965), (3, 7005310), (5, 4203186), (6, 3502655), (10, 2101593), (13, 1616610), (15, 1401062), (26, 808305), (30, 700531), (39, 538870), (65, 323322), (78, 269435), (130, 161661), (195, 107774), (390, 53887)]