21443870

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:537

約数の個数: 48

約数和(自身を含む): 45431280

約数和(自身を除く): 23987410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 107, 214, 245, 409, 490, 535, 749, 818, 1070, 1498, 2045, 2863, 3745, 4090, 5243, 5726, 7490, 10486, 14315, 20041, 26215, 28630, 40082, 43763, 52430, 87526, 100205, 200410, 218815, 306341, 437630, 612682, 1531705, 2144387, 3063410, 4288774, 10721935, 21443870]

約数ペア:

[(1, 21443870), (2, 10721935), (5, 4288774), (7, 3063410), (10, 2144387), (14, 1531705), (35, 612682), (49, 437630), (70, 306341), (98, 218815), (107, 200410), (214, 100205), (245, 87526), (409, 52430), (490, 43763), (535, 40082), (749, 28630), (818, 26215), (1070, 20041), (1498, 14315), (2045, 10486), (2863, 7490), (3745, 5726), (4090, 5243)]