209257490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{123821}}^1$

素因数の和:123854

約数の個数: 24

約数和(自身を含む): 407869668

約数和(自身を除く): 198612178

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 123821, 247642, 619105, 1238210, 1609673, 3219346, 8048365, 16096730, 20925749, 41851498, 104628745, 209257490]

約数ペア:

[(1, 209257490), (2, 104628745), (5, 41851498), (10, 20925749), (13, 16096730), (26, 8048365), (65, 3219346), (130, 1609673), (169, 1238210), (338, 619105), (845, 247642), (1690, 123821)]