20648264

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27614776

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 113, 182, 226, 251, 364, 452, 502, 728, 791, 904, 1004, 1469, 1582, 1757, 2008, 2938, 3164, 3263, 3514, 5876, 6328, 6526, 7028, 10283, 11752, 13052, 14056, 20566, 22841, 26104, 28363, 41132, 45682, 56726, 82264, 91364, 113452, 182728, 198541, 226904, 368719, 397082, 737438, 794164, 1474876, 1588328, 2581033, 2949752, 5162066, 10324132, 20648264]

約数ペア:

[(1, 20648264), (2, 10324132), (4, 5162066), (7, 2949752), (8, 2581033), (13, 1588328), (14, 1474876), (26, 794164), (28, 737438), (52, 397082), (56, 368719), (91, 226904), (104, 198541), (113, 182728), (182, 113452), (226, 91364), (251, 82264), (364, 56726), (452, 45682), (502, 41132), (728, 28363), (791, 26104), (904, 22841), (1004, 20566), (1469, 14056), (1582, 13052), (1757, 11752), (2008, 10283), (2938, 7028), (3164, 6526), (3263, 6328), (3514, 5876)]