21171420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117619}}^1$

素因数の和:117634

約数の個数: 36

約数和(自身を含む): 64220520

約数和(自身を除く): 43049100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117619, 235238, 352857, 470476, 588095, 705714, 1058571, 1176190, 1411428, 1764285, 2117142, 2352380, 3528570, 4234284, 5292855, 7057140, 10585710, 21171420]

約数ペア:

[(1, 21171420), (2, 10585710), (3, 7057140), (4, 5292855), (5, 4234284), (6, 3528570), (9, 2352380), (10, 2117142), (12, 1764285), (15, 1411428), (18, 1176190), (20, 1058571), (30, 705714), (36, 588095), (45, 470476), (60, 352857), (90, 235238), (180, 117619)]