39500240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2044

約数の個数: 80

約数和(自身を含む): 104160000

約数和(自身を除く): 64659760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 1999, 2470, 3952, 3998, 4940, 7996, 9880, 9995, 15992, 19760, 19990, 25987, 31984, 37981, 39980, 51974, 75962, 79960, 103948, 129935, 151924, 159920, 189905, 207896, 259870, 303848, 379810, 415792, 493753, 519740, 607696, 759620, 987506, 1039480, 1519240, 1975012, 2078960, 2468765, 3038480, 3950024, 4937530, 7900048, 9875060, 19750120, 39500240]

約数ペア:

[(1, 39500240), (2, 19750120), (4, 9875060), (5, 7900048), (8, 4937530), (10, 3950024), (13, 3038480), (16, 2468765), (19, 2078960), (20, 1975012), (26, 1519240), (38, 1039480), (40, 987506), (52, 759620), (65, 607696), (76, 519740), (80, 493753), (95, 415792), (104, 379810), (130, 303848), (152, 259870), (190, 207896), (208, 189905), (247, 159920), (260, 151924), (304, 129935), (380, 103948), (494, 79960), (520, 75962), (760, 51974), (988, 39980), (1040, 37981), (1235, 31984), (1520, 25987), (1976, 19990), (1999, 19760), (2470, 15992), (3952, 9995), (3998, 9880), (4940, 7996)]