21843775

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 28154448

約数和(自身を除く): 6310673

約数列:

[1, 5, 25, 41, 101, 205, 211, 505, 1025, 1055, 2525, 4141, 5275, 8651, 20705, 21311, 43255, 103525, 106555, 216275, 532775, 873751, 4368755, 21843775]

約数ペア:

[(1, 21843775), (5, 4368755), (25, 873751), (41, 532775), (101, 216275), (205, 106555), (211, 103525), (505, 43255), (1025, 21311), (1055, 20705), (2525, 8651), (4141, 5275)]