21653968

素因数分解:

$2^4\times 7^1\times {\mathrm{397}}^1\times {\mathrm{487}}^1$

素因数の和:899

約数の個数: 40

約数和(自身を含む): 48167552

約数和(自身を除く): 26513584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 397, 487, 794, 974, 1588, 1948, 2779, 3176, 3409, 3896, 5558, 6352, 6818, 7792, 11116, 13636, 22232, 27272, 44464, 54544, 193339, 386678, 773356, 1353373, 1546712, 2706746, 3093424, 5413492, 10826984, 21653968]

約数ペア:

[(1, 21653968), (2, 10826984), (4, 5413492), (7, 3093424), (8, 2706746), (14, 1546712), (16, 1353373), (28, 773356), (56, 386678), (112, 193339), (397, 54544), (487, 44464), (794, 27272), (974, 22232), (1588, 13636), (1948, 11116), (2779, 7792), (3176, 6818), (3409, 6352), (3896, 5558)]