20813387

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 25472160

約数和(自身を除く): 4658773

約数列:

[1, 7, 29, 49, 97, 151, 203, 679, 1057, 1421, 2813, 4379, 4753, 7399, 14647, 19691, 30653, 102529, 137837, 214571, 424763, 717703, 2973341, 20813387]

約数ペア:

[(1, 20813387), (7, 2973341), (29, 717703), (49, 424763), (97, 214571), (151, 137837), (203, 102529), (679, 30653), (1057, 19691), (1421, 14647), (2813, 7399), (4379, 4753)]