21454906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:534

約数の個数: 32

約数和(自身を含む): 37065600

約数和(自身を除く): 15610694

約数列:

[1, 2, 11, 22, 23, 46, 109, 218, 253, 389, 506, 778, 1199, 2398, 2507, 4279, 5014, 8558, 8947, 17894, 27577, 42401, 55154, 84802, 98417, 196834, 466411, 932822, 975223, 1950446, 10727453, 21454906]

約数ペア:

[(1, 21454906), (2, 10727453), (11, 1950446), (22, 975223), (23, 932822), (46, 466411), (109, 196834), (218, 98417), (253, 84802), (389, 55154), (506, 42401), (778, 27577), (1199, 17894), (2398, 8947), (2507, 8558), (4279, 5014)]