21330530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2311}}^1$

素因数の和:2402

約数の個数: 32

約数和(自身を含む): 41948928

約数和(自身を除く): 20618398

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 355, 710, 923, 1846, 2311, 4615, 4622, 9230, 11555, 23110, 30043, 60086, 150215, 164081, 300430, 328162, 820405, 1640810, 2133053, 4266106, 10665265, 21330530]

約数ペア:

[(1, 21330530), (2, 10665265), (5, 4266106), (10, 2133053), (13, 1640810), (26, 820405), (65, 328162), (71, 300430), (130, 164081), (142, 150215), (355, 60086), (710, 30043), (923, 23110), (1846, 11555), (2311, 9230), (4615, 4622)]