20571148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:526

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 21200372

約数列:

[1, 2, 4, 13, 19, 26, 38, 47, 52, 76, 94, 188, 247, 443, 494, 611, 886, 893, 988, 1222, 1772, 1786, 2444, 3572, 5759, 8417, 11518, 11609, 16834, 20821, 23036, 23218, 33668, 41642, 46436, 83284, 109421, 218842, 270673, 395599, 437684, 541346, 791198, 1082692, 1582396, 5142787, 10285574, 20571148]

約数ペア:

[(1, 20571148), (2, 10285574), (4, 5142787), (13, 1582396), (19, 1082692), (26, 791198), (38, 541346), (47, 437684), (52, 395599), (76, 270673), (94, 218842), (188, 109421), (247, 83284), (443, 46436), (494, 41642), (611, 33668), (886, 23218), (893, 23036), (988, 20821), (1222, 16834), (1772, 11609), (1786, 11518), (2444, 8417), (3572, 5759)]