21860150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^3\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 44268000

約数和(自身を除く): 22407850

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 199, 325, 338, 398, 650, 845, 995, 1690, 1990, 2197, 2587, 4225, 4394, 4975, 5174, 8450, 9950, 10985, 12935, 21970, 25870, 33631, 54925, 64675, 67262, 109850, 129350, 168155, 336310, 437203, 840775, 874406, 1681550, 2186015, 4372030, 10930075, 21860150]

約数ペア:

[(1, 21860150), (2, 10930075), (5, 4372030), (10, 2186015), (13, 1681550), (25, 874406), (26, 840775), (50, 437203), (65, 336310), (130, 168155), (169, 129350), (199, 109850), (325, 67262), (338, 64675), (398, 54925), (650, 33631), (845, 25870), (995, 21970), (1690, 12935), (1990, 10985), (2197, 9950), (2587, 8450), (4225, 5174), (4394, 4975)]