21255610

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1289}}^1$

素因数の和:1410

約数の個数: 32

約数和(自身を含む): 40960080

約数和(自身を除く): 19704470

約数列:

[1, 2, 5, 10, 17, 34, 85, 97, 170, 194, 485, 970, 1289, 1649, 2578, 3298, 6445, 8245, 12890, 16490, 21913, 43826, 109565, 125033, 219130, 250066, 625165, 1250330, 2125561, 4251122, 10627805, 21255610]

約数ペア:

[(1, 21255610), (2, 10627805), (5, 4251122), (10, 2125561), (17, 1250330), (34, 625165), (85, 250066), (97, 219130), (170, 125033), (194, 109565), (485, 43826), (970, 21913), (1289, 16490), (1649, 12890), (2578, 8245), (3298, 6445)]