20405644

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 43642368

約数和(自身を除く): 23236724

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 163, 238, 263, 326, 476, 526, 652, 1052, 1141, 1841, 2282, 2771, 3682, 4471, 4564, 5542, 7364, 8942, 11084, 17884, 19397, 31297, 38794, 42869, 62594, 77588, 85738, 125188, 171476, 300083, 600166, 728773, 1200332, 1457546, 2915092, 5101411, 10202822, 20405644]

約数ペア:

[(1, 20405644), (2, 10202822), (4, 5101411), (7, 2915092), (14, 1457546), (17, 1200332), (28, 728773), (34, 600166), (68, 300083), (119, 171476), (163, 125188), (238, 85738), (263, 77588), (326, 62594), (476, 42869), (526, 38794), (652, 31297), (1052, 19397), (1141, 17884), (1841, 11084), (2282, 8942), (2771, 7364), (3682, 5542), (4471, 4564)]