21679185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1583}}^1$

素因数の和:1685

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16640943

約数列:

[1, 3, 5, 11, 15, 33, 55, 83, 165, 249, 415, 913, 1245, 1583, 2739, 4565, 4749, 7915, 13695, 17413, 23745, 52239, 87065, 131389, 261195, 394167, 656945, 1445279, 1970835, 4335837, 7226395, 21679185]

約数ペア:

[(1, 21679185), (3, 7226395), (5, 4335837), (11, 1970835), (15, 1445279), (33, 656945), (55, 394167), (83, 261195), (165, 131389), (249, 87065), (415, 52239), (913, 23745), (1245, 17413), (1583, 13695), (2739, 7915), (4565, 4749)]