20530887

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{269}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 10918713

約数列:

[1, 3, 13, 19, 39, 57, 103, 247, 269, 309, 741, 807, 1339, 1957, 3497, 4017, 5111, 5871, 10491, 15333, 25441, 27707, 66443, 76323, 83121, 199329, 360191, 526433, 1080573, 1579299, 6843629, 20530887]

約数ペア:

[(1, 20530887), (3, 6843629), (13, 1579299), (19, 1080573), (39, 526433), (57, 360191), (103, 199329), (247, 83121), (269, 76323), (309, 66443), (741, 27707), (807, 25441), (1339, 15333), (1957, 10491), (3497, 5871), (4017, 5111)]