209568025

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{383}}^1\times {\mathrm{509}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 267125760

約数和(自身を除く): 57557735

約数列:

[1, 5, 25, 43, 215, 383, 509, 1075, 1915, 2545, 9575, 12725, 16469, 21887, 82345, 109435, 194947, 411725, 547175, 974735, 4873675, 8382721, 41913605, 209568025]

約数ペア:

[(1, 209568025), (5, 41913605), (25, 8382721), (43, 4873675), (215, 974735), (383, 547175), (509, 411725), (1075, 194947), (1915, 109435), (2545, 82345), (9575, 21887), (12725, 16469)]