77121420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1999}}^1$

素因数の和:2654

約数の個数: 48

約数和(自身を含む): 216384000

約数和(自身を除く): 139262580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 643, 1286, 1929, 1999, 2572, 3215, 3858, 3998, 5997, 6430, 7716, 7996, 9645, 9995, 11994, 12860, 19290, 19990, 23988, 29985, 38580, 39980, 59970, 119940, 1285357, 2570714, 3856071, 5141428, 6426785, 7712142, 12853570, 15424284, 19280355, 25707140, 38560710, 77121420]

約数ペア:

[(1, 77121420), (2, 38560710), (3, 25707140), (4, 19280355), (5, 15424284), (6, 12853570), (10, 7712142), (12, 6426785), (15, 5141428), (20, 3856071), (30, 2570714), (60, 1285357), (643, 119940), (1286, 59970), (1929, 39980), (1999, 38580), (2572, 29985), (3215, 23988), (3858, 19990), (3998, 19290), (5997, 12860), (6430, 11994), (7716, 9995), (7996, 9645)]