209715237

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{23753}}^1$

素因数の和:23874

約数の個数: 20

約数和(自身を含む): 316165740

約数和(自身を除く): 106450503

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 8829, 23753, 71259, 213777, 641331, 1923993, 2589077, 7767231, 23301693, 69905079, 209715237]

約数ペア:

[(1, 209715237), (3, 69905079), (9, 23301693), (27, 7767231), (81, 2589077), (109, 1923993), (327, 641331), (981, 213777), (2943, 71259), (8829, 23753)]