666560450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{2161}}^1$

素因数の和:2403

約数の個数: 48

約数和(自身を含む): 1286822400

約数和(自身を除く): 620261950

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 199, 310, 398, 775, 995, 1550, 1990, 2161, 4322, 4975, 6169, 9950, 10805, 12338, 21610, 30845, 54025, 61690, 66991, 108050, 133982, 154225, 308450, 334955, 430039, 669910, 860078, 1674775, 2150195, 3349550, 4300390, 10750975, 13331209, 21501950, 26662418, 66656045, 133312090, 333280225, 666560450]

約数ペア:

[(1, 666560450), (2, 333280225), (5, 133312090), (10, 66656045), (25, 26662418), (31, 21501950), (50, 13331209), (62, 10750975), (155, 4300390), (199, 3349550), (310, 2150195), (398, 1674775), (775, 860078), (995, 669910), (1550, 430039), (1990, 334955), (2161, 308450), (4322, 154225), (4975, 133982), (6169, 108050), (9950, 66991), (10805, 61690), (12338, 54025), (21610, 30845)]