219539450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{25981}}^1$

素因数の和:26019

約数の個数: 36

約数和(自身を含む): 442187658

約数和(自身を除く): 222648208

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 4225, 8450, 25981, 51962, 129905, 259810, 337753, 649525, 675506, 1299050, 1688765, 3377530, 4390789, 8443825, 8781578, 16887650, 21953945, 43907890, 109769725, 219539450]

約数ペア:

[(1, 219539450), (2, 109769725), (5, 43907890), (10, 21953945), (13, 16887650), (25, 8781578), (26, 8443825), (50, 4390789), (65, 3377530), (130, 1688765), (169, 1299050), (325, 675506), (338, 649525), (650, 337753), (845, 259810), (1690, 129905), (4225, 51962), (8450, 25981)]