20720558

素因数分解:

$2^1\times {\mathrm{29}}^2\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:284

約数の個数: 24

約数和(自身を含む): 32777472

約数和(自身を除く): 12056914

約数列:

[1, 2, 29, 58, 97, 127, 194, 254, 841, 1682, 2813, 3683, 5626, 7366, 12319, 24638, 81577, 106807, 163154, 213614, 357251, 714502, 10360279, 20720558]

約数ペア:

[(1, 20720558), (2, 10360279), (29, 714502), (58, 357251), (97, 213614), (127, 163154), (194, 106807), (254, 81577), (841, 24638), (1682, 12319), (2813, 7366), (3683, 5626)]