256594130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{63671}}^1$

素因数の和:63722

約数の個数: 32

約数和(自身を含む): 513451008

約数和(自身を除く): 256856878

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 63671, 127342, 318355, 636710, 827723, 1655446, 1973801, 3947602, 4138615, 8277230, 9869005, 19738010, 25659413, 51318826, 128297065, 256594130]

約数ペア:

[(1, 256594130), (2, 128297065), (5, 51318826), (10, 25659413), (13, 19738010), (26, 9869005), (31, 8277230), (62, 4138615), (65, 3947602), (130, 1973801), (155, 1655446), (310, 827723), (403, 636710), (806, 318355), (2015, 127342), (4030, 63671)]