21698120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1877}}^1$

素因数の和:1922

約数の個数: 48

約数和(自身を含む): 51889140

約数和(自身を除く): 30191020

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1877, 2312, 2890, 3754, 5780, 7508, 9385, 11560, 15016, 18770, 31909, 37540, 63818, 75080, 127636, 159545, 255272, 319090, 542453, 638180, 1084906, 1276360, 2169812, 2712265, 4339624, 5424530, 10849060, 21698120]

約数ペア:

[(1, 21698120), (2, 10849060), (4, 5424530), (5, 4339624), (8, 2712265), (10, 2169812), (17, 1276360), (20, 1084906), (34, 638180), (40, 542453), (68, 319090), (85, 255272), (136, 159545), (170, 127636), (289, 75080), (340, 63818), (578, 37540), (680, 31909), (1156, 18770), (1445, 15016), (1877, 11560), (2312, 9385), (2890, 7508), (3754, 5780)]