19961260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2213}}^1$

素因数の和:2274

約数の個数: 48

約数和(自身を含む): 46865952

約数和(自身を除く): 26904692

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2213, 2255, 4426, 4510, 8852, 9020, 11065, 22130, 24343, 44260, 48686, 90733, 97372, 121715, 181466, 243430, 362932, 453665, 486860, 907330, 998063, 1814660, 1996126, 3992252, 4990315, 9980630, 19961260]

約数ペア:

[(1, 19961260), (2, 9980630), (4, 4990315), (5, 3992252), (10, 1996126), (11, 1814660), (20, 998063), (22, 907330), (41, 486860), (44, 453665), (55, 362932), (82, 243430), (110, 181466), (164, 121715), (205, 97372), (220, 90733), (410, 48686), (451, 44260), (820, 24343), (902, 22130), (1804, 11065), (2213, 9020), (2255, 8852), (4426, 4510)]