21819304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209801}}^1$

素因数の和:209820

約数の個数: 16

約数和(自身を含む): 44058420

約数和(自身を除く): 22239116

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209801, 419602, 839204, 1678408, 2727413, 5454826, 10909652, 21819304]

約数ペア:

[(1, 21819304), (2, 10909652), (4, 5454826), (8, 2727413), (13, 1678408), (26, 839204), (52, 419602), (104, 209801)]