21164390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2293}}^1$

素因数の和:2384

約数の個数: 32

約数和(自身を含む): 41622336

約数和(自身を除く): 20457946

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2293, 4586, 4615, 9230, 11465, 22930, 29809, 59618, 149045, 162803, 298090, 325606, 814015, 1628030, 2116439, 4232878, 10582195, 21164390]

約数ペア:

[(1, 21164390), (2, 10582195), (5, 4232878), (10, 2116439), (13, 1628030), (26, 814015), (65, 325606), (71, 298090), (130, 162803), (142, 149045), (355, 59618), (710, 29809), (923, 22930), (1846, 11465), (2293, 9230), (4586, 4615)]