20721852

素因数分解:

$2^2\times 3^3\times {\mathrm{313}}^1\times {\mathrm{613}}^1$

素因数の和:939

約数の個数: 48

約数和(自身を含む): 53982880

約数和(自身を除く): 33261028

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 313, 613, 626, 939, 1226, 1252, 1839, 1878, 2452, 2817, 3678, 3756, 5517, 5634, 7356, 8451, 11034, 11268, 16551, 16902, 22068, 33102, 33804, 66204, 191869, 383738, 575607, 767476, 1151214, 1726821, 2302428, 3453642, 5180463, 6907284, 10360926, 20721852]

約数ペア:

[(1, 20721852), (2, 10360926), (3, 6907284), (4, 5180463), (6, 3453642), (9, 2302428), (12, 1726821), (18, 1151214), (27, 767476), (36, 575607), (54, 383738), (108, 191869), (313, 66204), (613, 33804), (626, 33102), (939, 22068), (1226, 16902), (1252, 16551), (1839, 11268), (1878, 11034), (2452, 8451), (2817, 7356), (3678, 5634), (3756, 5517)]