21431060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3257}}^1$

素因数の和:3320

約数の個数: 48

約数和(自身を含む): 52545024

約数和(自身を除く): 31113964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3257, 3290, 6514, 6580, 13028, 16285, 22799, 32570, 45598, 65140, 91196, 113995, 153079, 227990, 306158, 455980, 612316, 765395, 1071553, 1530790, 2143106, 3061580, 4286212, 5357765, 10715530, 21431060]

約数ペア:

[(1, 21431060), (2, 10715530), (4, 5357765), (5, 4286212), (7, 3061580), (10, 2143106), (14, 1530790), (20, 1071553), (28, 765395), (35, 612316), (47, 455980), (70, 306158), (94, 227990), (140, 153079), (188, 113995), (235, 91196), (329, 65140), (470, 45598), (658, 32570), (940, 22799), (1316, 16285), (1645, 13028), (3257, 6580), (3290, 6514)]