20213305903

素因数分解:

$7^4\times {\mathrm{127}}^1\times {\mathrm{151}}^1\times {\mathrm{439}}^1$

素因数の和:745

約数の個数: 40

約数和(自身を含む): 23978352640

約数和(自身を除く): 3765046737

約数列:

[1, 7, 49, 127, 151, 343, 439, 889, 1057, 2401, 3073, 6223, 7399, 19177, 21511, 43561, 51793, 55753, 66289, 134239, 150577, 304927, 362551, 390271, 464023, 939673, 1054039, 2731897, 3248161, 6577711, 8418703, 19123279, 22737127, 46043977, 58930921, 133862953, 159159889, 412516447, 2887615129, 20213305903]

約数ペア:

[(1, 20213305903), (7, 2887615129), (49, 412516447), (127, 159159889), (151, 133862953), (343, 58930921), (439, 46043977), (889, 22737127), (1057, 19123279), (2401, 8418703), (3073, 6577711), (6223, 3248161), (7399, 2731897), (19177, 1054039), (21511, 939673), (43561, 464023), (51793, 390271), (55753, 362551), (66289, 304927), (134239, 150577)]