20689650

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2040

約数の個数: 72

約数和(自身を含む): 58032000

約数和(自身を除く): 37342350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 25, 30, 45, 46, 50, 69, 75, 90, 115, 138, 150, 207, 225, 230, 345, 414, 450, 575, 690, 1035, 1150, 1725, 1999, 2070, 3450, 3998, 5175, 5997, 9995, 10350, 11994, 17991, 19990, 29985, 35982, 45977, 49975, 59970, 89955, 91954, 99950, 137931, 149925, 179910, 229885, 275862, 299850, 413793, 449775, 459770, 689655, 827586, 899550, 1149425, 1379310, 2068965, 2298850, 3448275, 4137930, 6896550, 10344825, 20689650]

約数ペア:

[(1, 20689650), (2, 10344825), (3, 6896550), (5, 4137930), (6, 3448275), (9, 2298850), (10, 2068965), (15, 1379310), (18, 1149425), (23, 899550), (25, 827586), (30, 689655), (45, 459770), (46, 449775), (50, 413793), (69, 299850), (75, 275862), (90, 229885), (115, 179910), (138, 149925), (150, 137931), (207, 99950), (225, 91954), (230, 89955), (345, 59970), (414, 49975), (450, 45977), (575, 35982), (690, 29985), (1035, 19990), (1150, 17991), (1725, 11994), (1999, 10350), (2070, 9995), (3450, 5997), (3998, 5175)]