31871968

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:168

約数の個数: 72

約数和(自身を含む): 69128640

約数和(自身を除く): 37256672

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 89, 124, 152, 178, 248, 304, 356, 361, 496, 589, 608, 712, 722, 992, 1178, 1424, 1444, 1691, 2356, 2759, 2848, 2888, 3382, 4712, 5518, 5776, 6764, 9424, 11036, 11191, 11552, 13528, 18848, 22072, 22382, 27056, 32129, 44144, 44764, 52421, 54112, 64258, 88288, 89528, 104842, 128516, 179056, 209684, 257032, 358112, 419368, 514064, 838736, 995999, 1028128, 1677472, 1991998, 3983996, 7967992, 15935984, 31871968]

約数ペア:

[(1, 31871968), (2, 15935984), (4, 7967992), (8, 3983996), (16, 1991998), (19, 1677472), (31, 1028128), (32, 995999), (38, 838736), (62, 514064), (76, 419368), (89, 358112), (124, 257032), (152, 209684), (178, 179056), (248, 128516), (304, 104842), (356, 89528), (361, 88288), (496, 64258), (589, 54112), (608, 52421), (712, 44764), (722, 44144), (992, 32129), (1178, 27056), (1424, 22382), (1444, 22072), (1691, 18848), (2356, 13528), (2759, 11552), (2848, 11191), (2888, 11036), (3382, 9424), (4712, 6764), (5518, 5776)]