25521660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1997}}^1$

素因数の和:2083

約数の個数: 72

約数和(自身を含む): 78545376

約数和(自身を除く): 53023716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1997, 2130, 2556, 3195, 3994, 4260, 5991, 6390, 7988, 9985, 11982, 12780, 17973, 19970, 23964, 29955, 35946, 39940, 59910, 71892, 89865, 119820, 141787, 179730, 283574, 359460, 425361, 567148, 708935, 850722, 1276083, 1417870, 1701444, 2126805, 2552166, 2835740, 4253610, 5104332, 6380415, 8507220, 12760830, 25521660]

約数ペア:

[(1, 25521660), (2, 12760830), (3, 8507220), (4, 6380415), (5, 5104332), (6, 4253610), (9, 2835740), (10, 2552166), (12, 2126805), (15, 1701444), (18, 1417870), (20, 1276083), (30, 850722), (36, 708935), (45, 567148), (60, 425361), (71, 359460), (90, 283574), (142, 179730), (180, 141787), (213, 119820), (284, 89865), (355, 71892), (426, 59910), (639, 39940), (710, 35946), (852, 29955), (1065, 23964), (1278, 19970), (1420, 17973), (1997, 12780), (2130, 11982), (2556, 9985), (3195, 7988), (3994, 6390), (4260, 5991)]