31159960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1933}}^1$

素因数の和:1988

約数の個数: 64

約数和(自身を含む): 77978880

約数和(自身を除く): 46818920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1933, 2015, 3224, 3866, 4030, 7732, 8060, 9665, 15464, 16120, 19330, 25129, 38660, 50258, 59923, 77320, 100516, 119846, 125645, 201032, 239692, 251290, 299615, 479384, 502580, 599230, 778999, 1005160, 1198460, 1557998, 2396920, 3115996, 3894995, 6231992, 7789990, 15579980, 31159960]

約数ペア:

[(1, 31159960), (2, 15579980), (4, 7789990), (5, 6231992), (8, 3894995), (10, 3115996), (13, 2396920), (20, 1557998), (26, 1198460), (31, 1005160), (40, 778999), (52, 599230), (62, 502580), (65, 479384), (104, 299615), (124, 251290), (130, 239692), (155, 201032), (248, 125645), (260, 119846), (310, 100516), (403, 77320), (520, 59923), (620, 50258), (806, 38660), (1240, 25129), (1612, 19330), (1933, 16120), (2015, 15464), (3224, 9665), (3866, 8060), (4030, 7732)]