20049250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 41932800

約数和(自身を除く): 21883550

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 125, 130, 155, 199, 250, 310, 325, 398, 403, 650, 775, 806, 995, 1550, 1625, 1990, 2015, 2587, 3250, 3875, 4030, 4975, 5174, 6169, 7750, 9950, 10075, 12338, 12935, 20150, 24875, 25870, 30845, 49750, 50375, 61690, 64675, 80197, 100750, 129350, 154225, 160394, 308450, 323375, 400985, 646750, 771125, 801970, 1542250, 2004925, 4009850, 10024625, 20049250]

約数ペア:

[(1, 20049250), (2, 10024625), (5, 4009850), (10, 2004925), (13, 1542250), (25, 801970), (26, 771125), (31, 646750), (50, 400985), (62, 323375), (65, 308450), (125, 160394), (130, 154225), (155, 129350), (199, 100750), (250, 80197), (310, 64675), (325, 61690), (398, 50375), (403, 49750), (650, 30845), (775, 25870), (806, 24875), (995, 20150), (1550, 12935), (1625, 12338), (1990, 10075), (2015, 9950), (2587, 7750), (3250, 6169), (3875, 5174), (4030, 4975)]