211894175

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 287838720

約数和(自身を除く): 75944545

約数列:

[1, 5, 19, 25, 61, 71, 95, 103, 305, 355, 475, 515, 1159, 1349, 1525, 1775, 1957, 2575, 4331, 5795, 6283, 6745, 7313, 9785, 21655, 28975, 31415, 33725, 36565, 48925, 82289, 108275, 119377, 138947, 157075, 182825, 411445, 446093, 596885, 694735, 2057225, 2230465, 2984425, 3473675, 8475767, 11152325, 42378835, 211894175]

約数ペア:

[(1, 211894175), (5, 42378835), (19, 11152325), (25, 8475767), (61, 3473675), (71, 2984425), (95, 2230465), (103, 2057225), (305, 694735), (355, 596885), (475, 446093), (515, 411445), (1159, 182825), (1349, 157075), (1525, 138947), (1775, 119377), (1957, 108275), (2575, 82289), (4331, 48925), (5795, 36565), (6283, 33725), (6745, 31415), (7313, 28975), (9785, 21655)]