19903196

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:701

約数の個数: 24

約数和(自身を含む): 35731584

約数和(自身を除く): 15828388

約数列:

[1, 2, 4, 53, 106, 212, 223, 421, 446, 842, 892, 1684, 11819, 22313, 23638, 44626, 47276, 89252, 93883, 187766, 375532, 4975799, 9951598, 19903196]

約数ペア:

[(1, 19903196), (2, 9951598), (4, 4975799), (53, 375532), (106, 187766), (212, 93883), (223, 89252), (421, 47276), (446, 44626), (842, 23638), (892, 22313), (1684, 11819)]