18500680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2213}}^1$

素因数の和:2254

約数の個数: 64

約数和(自身を含む): 47822400

約数和(自身を除く): 29321720

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2213, 4180, 4426, 8360, 8852, 11065, 17704, 22130, 24343, 42047, 44260, 48686, 84094, 88520, 97372, 121715, 168188, 194744, 210235, 243430, 336376, 420470, 462517, 486860, 840940, 925034, 973720, 1681880, 1850068, 2312585, 3700136, 4625170, 9250340, 18500680]

約数ペア:

[(1, 18500680), (2, 9250340), (4, 4625170), (5, 3700136), (8, 2312585), (10, 1850068), (11, 1681880), (19, 973720), (20, 925034), (22, 840940), (38, 486860), (40, 462517), (44, 420470), (55, 336376), (76, 243430), (88, 210235), (95, 194744), (110, 168188), (152, 121715), (190, 97372), (209, 88520), (220, 84094), (380, 48686), (418, 44260), (440, 42047), (760, 24343), (836, 22130), (1045, 17704), (1672, 11065), (2090, 8852), (2213, 8360), (4180, 4426)]