20878884

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{4957}}^1$

素因数の和:4986

約数の個数: 60

約数和(自身を含む): 58791964

約数和(自身を除く): 37913080

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 324, 351, 468, 702, 1053, 1404, 2106, 4212, 4957, 9914, 14871, 19828, 29742, 44613, 59484, 64441, 89226, 128882, 133839, 178452, 193323, 257764, 267678, 386646, 401517, 535356, 579969, 773292, 803034, 1159938, 1606068, 1739907, 2319876, 3479814, 5219721, 6959628, 10439442, 20878884]

約数ペア:

[(1, 20878884), (2, 10439442), (3, 6959628), (4, 5219721), (6, 3479814), (9, 2319876), (12, 1739907), (13, 1606068), (18, 1159938), (26, 803034), (27, 773292), (36, 579969), (39, 535356), (52, 401517), (54, 386646), (78, 267678), (81, 257764), (108, 193323), (117, 178452), (156, 133839), (162, 128882), (234, 89226), (324, 64441), (351, 59484), (468, 44613), (702, 29742), (1053, 19828), (1404, 14871), (2106, 9914), (4212, 4957)]