20171318840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{449851}}^1$

素因数の和:449940

約数の個数: 64

約数和(自身を含む): 48584016000

約数和(自身を除く): 28412697160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 236, 295, 380, 472, 590, 760, 1121, 1180, 2242, 2360, 4484, 5605, 8968, 11210, 22420, 44840, 449851, 899702, 1799404, 2249255, 3598808, 4498510, 8547169, 8997020, 17094338, 17994040, 26541209, 34188676, 42735845, 53082418, 68377352, 85471690, 106164836, 132706045, 170943380, 212329672, 265412090, 341886760, 504282971, 530824180, 1008565942, 1061648360, 2017131884, 2521414855, 4034263768, 5042829710, 10085659420, 20171318840]

約数ペア:

[(1, 20171318840), (2, 10085659420), (4, 5042829710), (5, 4034263768), (8, 2521414855), (10, 2017131884), (19, 1061648360), (20, 1008565942), (38, 530824180), (40, 504282971), (59, 341886760), (76, 265412090), (95, 212329672), (118, 170943380), (152, 132706045), (190, 106164836), (236, 85471690), (295, 68377352), (380, 53082418), (472, 42735845), (590, 34188676), (760, 26541209), (1121, 17994040), (1180, 17094338), (2242, 8997020), (2360, 8547169), (4484, 4498510), (5605, 3598808), (8968, 2249255), (11210, 1799404), (22420, 899702), (44840, 449851)]