20413920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{599}}^1$

素因数の和:688

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 44904480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 71, 80, 96, 120, 142, 160, 213, 240, 284, 355, 426, 480, 568, 599, 710, 852, 1065, 1136, 1198, 1420, 1704, 1797, 2130, 2272, 2396, 2840, 2995, 3408, 3594, 4260, 4792, 5680, 5990, 6816, 7188, 8520, 8985, 9584, 11360, 11980, 14376, 17040, 17970, 19168, 23960, 28752, 34080, 35940, 42529, 47920, 57504, 71880, 85058, 95840, 127587, 143760, 170116, 212645, 255174, 287520, 340232, 425290, 510348, 637935, 680464, 850580, 1020696, 1275870, 1360928, 1701160, 2041392, 2551740, 3402320, 4082784, 5103480, 6804640, 10206960, 20413920]

約数ペア:

[(1, 20413920), (2, 10206960), (3, 6804640), (4, 5103480), (5, 4082784), (6, 3402320), (8, 2551740), (10, 2041392), (12, 1701160), (15, 1360928), (16, 1275870), (20, 1020696), (24, 850580), (30, 680464), (32, 637935), (40, 510348), (48, 425290), (60, 340232), (71, 287520), (80, 255174), (96, 212645), (120, 170116), (142, 143760), (160, 127587), (213, 95840), (240, 85058), (284, 71880), (355, 57504), (426, 47920), (480, 42529), (568, 35940), (599, 34080), (710, 28752), (852, 23960), (1065, 19168), (1136, 17970), (1198, 17040), (1420, 14376), (1704, 11980), (1797, 11360), (2130, 9584), (2272, 8985), (2396, 8520), (2840, 7188), (2995, 6816), (3408, 5990), (3594, 5680), (4260, 4792)]