25663040

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 112

約数和(自身を含む): 68275200

約数和(自身を除く): 42612160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 199, 208, 248, 260, 310, 320, 398, 403, 416, 496, 520, 620, 796, 806, 832, 992, 995, 1040, 1240, 1592, 1612, 1984, 1990, 2015, 2080, 2480, 2587, 3184, 3224, 3980, 4030, 4160, 4960, 5174, 6169, 6368, 6448, 7960, 8060, 9920, 10348, 12338, 12736, 12896, 12935, 15920, 16120, 20696, 24676, 25792, 25870, 30845, 31840, 32240, 41392, 49352, 51740, 61690, 63680, 64480, 80197, 82784, 98704, 103480, 123380, 128960, 160394, 165568, 197408, 206960, 246760, 320788, 394816, 400985, 413920, 493520, 641576, 801970, 827840, 987040, 1283152, 1603940, 1974080, 2566304, 3207880, 5132608, 6415760, 12831520, 25663040]

約数ペア:

[(1, 25663040), (2, 12831520), (4, 6415760), (5, 5132608), (8, 3207880), (10, 2566304), (13, 1974080), (16, 1603940), (20, 1283152), (26, 987040), (31, 827840), (32, 801970), (40, 641576), (52, 493520), (62, 413920), (64, 400985), (65, 394816), (80, 320788), (104, 246760), (124, 206960), (130, 197408), (155, 165568), (160, 160394), (199, 128960), (208, 123380), (248, 103480), (260, 98704), (310, 82784), (320, 80197), (398, 64480), (403, 63680), (416, 61690), (496, 51740), (520, 49352), (620, 41392), (796, 32240), (806, 31840), (832, 30845), (992, 25870), (995, 25792), (1040, 24676), (1240, 20696), (1592, 16120), (1612, 15920), (1984, 12935), (1990, 12896), (2015, 12736), (2080, 12338), (2480, 10348), (2587, 9920), (3184, 8060), (3224, 7960), (3980, 6448), (4030, 6368), (4160, 6169), (4960, 5174)]