21088660

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6983}}^1$

素因数の和:7143

約数の個数: 24

約数和(自身を含む): 44585856

約数和(自身を除く): 23497196

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6983, 13966, 27932, 34915, 69830, 139660, 1054433, 2108866, 4217732, 5272165, 10544330, 21088660]

約数ペア:

[(1, 21088660), (2, 10544330), (4, 5272165), (5, 4217732), (10, 2108866), (20, 1054433), (151, 139660), (302, 69830), (604, 34915), (755, 27932), (1510, 13966), (3020, 6983)]