21132135

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 38273664

約数和(自身を除く): 17141529

約数列:

[1, 3, 5, 9, 15, 43, 45, 67, 129, 163, 201, 215, 335, 387, 489, 603, 645, 815, 1005, 1467, 1935, 2445, 2881, 3015, 7009, 7335, 8643, 10921, 14405, 21027, 25929, 32763, 35045, 43215, 54605, 63081, 98289, 105135, 129645, 163815, 315405, 469603, 491445, 1408809, 2348015, 4226427, 7044045, 21132135]

約数ペア:

[(1, 21132135), (3, 7044045), (5, 4226427), (9, 2348015), (15, 1408809), (43, 491445), (45, 469603), (67, 315405), (129, 163815), (163, 129645), (201, 105135), (215, 98289), (335, 63081), (387, 54605), (489, 43215), (603, 35045), (645, 32763), (815, 25929), (1005, 21027), (1467, 14405), (1935, 10921), (2445, 8643), (2881, 7335), (3015, 7009)]