251222015

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{241}}^1\times {\mathrm{1723}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 332931984

約数和(自身を除く): 81709969

約数列:

[1, 5, 11, 55, 121, 241, 605, 1205, 1723, 2651, 8615, 13255, 18953, 29161, 94765, 145805, 208483, 415243, 1042415, 2076215, 4567673, 22838365, 50244403, 251222015]

約数ペア:

[(1, 251222015), (5, 50244403), (11, 22838365), (55, 4567673), (121, 2076215), (241, 1042415), (605, 415243), (1205, 208483), (1723, 145805), (2651, 94765), (8615, 29161), (13255, 18953)]