21254172010

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{206813}}^1$

素因数の和:207102

約数の個数: 32

約数和(自身を含む): 39311205120

約数和(自身を除く): 18057033110

約数列:

[1, 2, 5, 10, 43, 86, 215, 239, 430, 478, 1195, 2390, 10277, 20554, 51385, 102770, 206813, 413626, 1034065, 2068130, 8892959, 17785918, 44464795, 49428307, 88929590, 98856614, 247141535, 494283070, 2125417201, 4250834402, 10627086005, 21254172010]

約数ペア:

[(1, 21254172010), (2, 10627086005), (5, 4250834402), (10, 2125417201), (43, 494283070), (86, 247141535), (215, 98856614), (239, 88929590), (430, 49428307), (478, 44464795), (1195, 17785918), (2390, 8892959), (10277, 2068130), (20554, 1034065), (51385, 413626), (102770, 206813)]