21375010

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 39765312

約数和(自身を除く): 18390302

約数列:

[1, 2, 5, 10, 61, 67, 122, 134, 305, 335, 523, 610, 670, 1046, 2615, 4087, 5230, 8174, 20435, 31903, 35041, 40870, 63806, 70082, 159515, 175205, 319030, 350410, 2137501, 4275002, 10687505, 21375010]

約数ペア:

[(1, 21375010), (2, 10687505), (5, 4275002), (10, 2137501), (61, 350410), (67, 319030), (122, 175205), (134, 159515), (305, 70082), (335, 63806), (523, 40870), (610, 35041), (670, 31903), (1046, 20435), (2615, 8174), (4087, 5230)]