31540280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 73954080

約数和(自身を除く): 42413800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 101, 148, 185, 202, 211, 296, 370, 404, 422, 505, 740, 808, 844, 1010, 1055, 1480, 1688, 2020, 2110, 3737, 4040, 4220, 7474, 7807, 8440, 14948, 15614, 18685, 21311, 29896, 31228, 37370, 39035, 42622, 62456, 74740, 78070, 85244, 106555, 149480, 156140, 170488, 213110, 312280, 426220, 788507, 852440, 1577014, 3154028, 3942535, 6308056, 7885070, 15770140, 31540280]

約数ペア:

[(1, 31540280), (2, 15770140), (4, 7885070), (5, 6308056), (8, 3942535), (10, 3154028), (20, 1577014), (37, 852440), (40, 788507), (74, 426220), (101, 312280), (148, 213110), (185, 170488), (202, 156140), (211, 149480), (296, 106555), (370, 85244), (404, 78070), (422, 74740), (505, 62456), (740, 42622), (808, 39035), (844, 37370), (1010, 31228), (1055, 29896), (1480, 21311), (1688, 18685), (2020, 15614), (2110, 14948), (3737, 8440), (4040, 7807), (4220, 7474)]