261896909090

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{20605579}}^1$

素因数の和:20605658

約数の個数: 32

約数和(自身を含む): 498490191360

約数和(自身を除く): 236593282270

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 1271, 2542, 6355, 12710, 20605579, 41211158, 103027895, 206055790, 638772949, 844828739, 1277545898, 1689657478, 3193864745, 4224143695, 6387729490, 8448287390, 26189690909, 52379381818, 130948454545, 261896909090]

約数ペア:

[(1, 261896909090), (2, 130948454545), (5, 52379381818), (10, 26189690909), (31, 8448287390), (41, 6387729490), (62, 4224143695), (82, 3193864745), (155, 1689657478), (205, 1277545898), (310, 844828739), (410, 638772949), (1271, 206055790), (2542, 103027895), (6355, 41211158), (12710, 20605579)]