21881210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9901}}^1$

素因数の和:9938

約数の個数: 32

約数和(自身を含む): 44915472

約数和(自身を除く): 23034262

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9901, 19802, 49505, 99010, 128713, 168317, 257426, 336634, 643565, 841585, 1287130, 1683170, 2188121, 4376242, 10940605, 21881210]

約数ペア:

[(1, 21881210), (2, 10940605), (5, 4376242), (10, 2188121), (13, 1683170), (17, 1287130), (26, 841585), (34, 643565), (65, 336634), (85, 257426), (130, 168317), (170, 128713), (221, 99010), (442, 49505), (1105, 19802), (2210, 9901)]