12831520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:258

約数の個数: 96

約数和(自身を含む): 33868800

約数和(自身を除く): 21037280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 199, 208, 248, 260, 310, 398, 403, 416, 496, 520, 620, 796, 806, 992, 995, 1040, 1240, 1592, 1612, 1990, 2015, 2080, 2480, 2587, 3184, 3224, 3980, 4030, 4960, 5174, 6169, 6368, 6448, 7960, 8060, 10348, 12338, 12896, 12935, 15920, 16120, 20696, 24676, 25870, 30845, 31840, 32240, 41392, 49352, 51740, 61690, 64480, 80197, 82784, 98704, 103480, 123380, 160394, 197408, 206960, 246760, 320788, 400985, 413920, 493520, 641576, 801970, 987040, 1283152, 1603940, 2566304, 3207880, 6415760, 12831520]

約数ペア:

[(1, 12831520), (2, 6415760), (4, 3207880), (5, 2566304), (8, 1603940), (10, 1283152), (13, 987040), (16, 801970), (20, 641576), (26, 493520), (31, 413920), (32, 400985), (40, 320788), (52, 246760), (62, 206960), (65, 197408), (80, 160394), (104, 123380), (124, 103480), (130, 98704), (155, 82784), (160, 80197), (199, 64480), (208, 61690), (248, 51740), (260, 49352), (310, 41392), (398, 32240), (403, 31840), (416, 30845), (496, 25870), (520, 24676), (620, 20696), (796, 16120), (806, 15920), (992, 12935), (995, 12896), (1040, 12338), (1240, 10348), (1592, 8060), (1612, 7960), (1990, 6448), (2015, 6368), (2080, 6169), (2480, 5174), (2587, 4960), (3184, 4030), (3224, 3980)]