213013840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{204821}}^1$

素因数の和:204847

約数の個数: 40

約数和(自身を含む): 533356488

約数和(自身を除く): 320342648

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 204821, 409642, 819284, 1024105, 1638568, 2048210, 2662673, 3277136, 4096420, 5325346, 8192840, 10650692, 13313365, 16385680, 21301384, 26626730, 42602768, 53253460, 106506920, 213013840]

約数ペア:

[(1, 213013840), (2, 106506920), (4, 53253460), (5, 42602768), (8, 26626730), (10, 21301384), (13, 16385680), (16, 13313365), (20, 10650692), (26, 8192840), (40, 5325346), (52, 4096420), (65, 3277136), (80, 2662673), (104, 2048210), (130, 1638568), (208, 1024105), (260, 819284), (520, 409642), (1040, 204821)]