20414420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78517}}^1$

素因数の和:78539

約数の個数: 24

約数和(自身を含む): 46168584

約数和(自身を除く): 25754164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78517, 157034, 314068, 392585, 785170, 1020721, 1570340, 2041442, 4082884, 5103605, 10207210, 20414420]

約数ペア:

[(1, 20414420), (2, 10207210), (4, 5103605), (5, 4082884), (10, 2041442), (13, 1570340), (20, 1020721), (26, 785170), (52, 392585), (65, 314068), (130, 157034), (260, 78517)]