21581577

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 31921344

約数和(自身を除く): 10339767

約数列:

[1, 3, 9, 83, 167, 173, 249, 501, 519, 747, 1503, 1557, 13861, 14359, 28891, 41583, 43077, 86673, 124749, 129231, 260019, 2397953, 7193859, 21581577]

約数ペア:

[(1, 21581577), (3, 7193859), (9, 2397953), (83, 260019), (167, 129231), (173, 124749), (249, 86673), (501, 43077), (519, 41583), (747, 28891), (1503, 14359), (1557, 13861)]