21291372

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{11159}}^1$

素因数の和:11222

約数の個数: 36

約数和(自身を含む): 54840240

約数和(自身を除く): 33548868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 11159, 22318, 33477, 44636, 66954, 100431, 133908, 200862, 401724, 591427, 1182854, 1774281, 2365708, 3548562, 5322843, 7097124, 10645686, 21291372]

約数ペア:

[(1, 21291372), (2, 10645686), (3, 7097124), (4, 5322843), (6, 3548562), (9, 2365708), (12, 1774281), (18, 1182854), (36, 591427), (53, 401724), (106, 200862), (159, 133908), (212, 100431), (318, 66954), (477, 44636), (636, 33477), (954, 22318), (1908, 11159)]