71268981

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 125089920

約数和(自身を除く): 53820939

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 79, 119, 133, 147, 237, 323, 357, 361, 399, 553, 833, 931, 969, 1083, 1343, 1501, 1659, 2261, 2499, 2527, 2793, 3871, 4029, 4503, 6137, 6783, 7581, 9401, 10507, 11613, 15827, 17689, 18411, 25517, 28203, 28519, 31521, 42959, 47481, 53067, 65807, 73549, 76551, 85557, 128877, 178619, 197421, 199633, 220647, 300713, 484823, 535857, 598899, 902139, 1250333, 1397431, 1454469, 3393761, 3750999, 4192293, 10181283, 23756327, 71268981]

約数ペア:

[(1, 71268981), (3, 23756327), (7, 10181283), (17, 4192293), (19, 3750999), (21, 3393761), (49, 1454469), (51, 1397431), (57, 1250333), (79, 902139), (119, 598899), (133, 535857), (147, 484823), (237, 300713), (323, 220647), (357, 199633), (361, 197421), (399, 178619), (553, 128877), (833, 85557), (931, 76551), (969, 73549), (1083, 65807), (1343, 53067), (1501, 47481), (1659, 42959), (2261, 31521), (2499, 28519), (2527, 28203), (2793, 25517), (3871, 18411), (4029, 17689), (4503, 15827), (6137, 11613), (6783, 10507), (7581, 9401)]