8019700

素因数分解:

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

素因数の和:257

約数の個数: 72

約数和(自身を含む): 19443200

約数和(自身を除く): 11423500

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 199, 260, 310, 325, 398, 403, 620, 650, 775, 796, 806, 995, 1300, 1550, 1612, 1990, 2015, 2587, 3100, 3980, 4030, 4975, 5174, 6169, 8060, 9950, 10075, 10348, 12338, 12935, 19900, 20150, 24676, 25870, 30845, 40300, 51740, 61690, 64675, 80197, 123380, 129350, 154225, 160394, 258700, 308450, 320788, 400985, 616900, 801970, 1603940, 2004925, 4009850, 8019700]

約数ペア:

[(1, 8019700), (2, 4009850), (4, 2004925), (5, 1603940), (10, 801970), (13, 616900), (20, 400985), (25, 320788), (26, 308450), (31, 258700), (50, 160394), (52, 154225), (62, 129350), (65, 123380), (100, 80197), (124, 64675), (130, 61690), (155, 51740), (199, 40300), (260, 30845), (310, 25870), (325, 24676), (398, 20150), (403, 19900), (620, 12935), (650, 12338), (775, 10348), (796, 10075), (806, 9950), (995, 8060), (1300, 6169), (1550, 5174), (1612, 4975), (1990, 4030), (2015, 3980), (2587, 3100)]