291217731

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{821}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 479784960

約数和(自身を除く): 188567229

約数列:

[1, 3, 7, 19, 21, 49, 57, 127, 133, 147, 381, 399, 821, 889, 931, 2413, 2463, 2667, 2793, 5747, 6223, 7239, 15599, 16891, 17241, 18669, 40229, 46797, 50673, 104267, 109193, 118237, 120687, 312801, 327579, 354711, 729869, 764351, 1981073, 2189607, 2293053, 5109083, 5943219, 13867511, 15327249, 41602533, 97072577, 291217731]

約数ペア:

[(1, 291217731), (3, 97072577), (7, 41602533), (19, 15327249), (21, 13867511), (49, 5943219), (57, 5109083), (127, 2293053), (133, 2189607), (147, 1981073), (381, 764351), (399, 729869), (821, 354711), (889, 327579), (931, 312801), (2413, 120687), (2463, 118237), (2667, 109193), (2793, 104267), (5747, 50673), (6223, 46797), (7239, 40229), (15599, 18669), (16891, 17241)]