20177363975

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{31489}}^1$

素因数の和:31608

約数の個数: 36

約数和(自身を含む): 26778844080

約数和(自身を除く): 6601480105

約数列:

[1, 5, 19, 25, 71, 95, 355, 361, 475, 1349, 1775, 1805, 6745, 9025, 25631, 31489, 33725, 128155, 157445, 598291, 640775, 787225, 2235719, 2991455, 11178595, 11367529, 14957275, 42478661, 55892975, 56837645, 212393305, 284188225, 807094559, 1061966525, 4035472795, 20177363975]

約数ペア:

[(1, 20177363975), (5, 4035472795), (19, 1061966525), (25, 807094559), (71, 284188225), (95, 212393305), (355, 56837645), (361, 55892975), (475, 42478661), (1349, 14957275), (1775, 11367529), (1805, 11178595), (6745, 2991455), (9025, 2235719), (25631, 787225), (31489, 640775), (33725, 598291), (128155, 157445)]