20320916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3881}}^1$

素因数の和:3920

約数の個数: 48

約数和(自身を含む): 46956672

約数和(自身を除く): 26635756

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 3881, 5236, 7762, 15524, 27167, 42691, 54334, 65977, 85382, 108668, 131954, 170764, 263908, 298837, 461839, 597674, 725747, 923678, 1195348, 1451494, 1847356, 2902988, 5080229, 10160458, 20320916]

約数ペア:

[(1, 20320916), (2, 10160458), (4, 5080229), (7, 2902988), (11, 1847356), (14, 1451494), (17, 1195348), (22, 923678), (28, 725747), (34, 597674), (44, 461839), (68, 298837), (77, 263908), (119, 170764), (154, 131954), (187, 108668), (238, 85382), (308, 65977), (374, 54334), (476, 42691), (748, 27167), (1309, 15524), (2618, 7762), (3881, 5236)]