213522920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{410621}}^1$

素因数の和:410645

約数の個数: 32

約数和(自身を含む): 517383720

約数和(自身を除く): 303860800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 410621, 821242, 1642484, 2053105, 3284968, 4106210, 5338073, 8212420, 10676146, 16424840, 21352292, 26690365, 42704584, 53380730, 106761460, 213522920]

約数ペア:

[(1, 213522920), (2, 106761460), (4, 53380730), (5, 42704584), (8, 26690365), (10, 21352292), (13, 16424840), (20, 10676146), (26, 8212420), (40, 5338073), (52, 4106210), (65, 3284968), (104, 2053105), (130, 1642484), (260, 821242), (520, 410621)]