18579140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 22305340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 103, 116, 145, 206, 290, 311, 412, 515, 580, 622, 1030, 1244, 1555, 2060, 2987, 3110, 5974, 6220, 9019, 11948, 14935, 18038, 29870, 32033, 36076, 45095, 59740, 64066, 90190, 128132, 160165, 180380, 320330, 640660, 928957, 1857914, 3715828, 4644785, 9289570, 18579140]

約数ペア:

[(1, 18579140), (2, 9289570), (4, 4644785), (5, 3715828), (10, 1857914), (20, 928957), (29, 640660), (58, 320330), (103, 180380), (116, 160165), (145, 128132), (206, 90190), (290, 64066), (311, 59740), (412, 45095), (515, 36076), (580, 32033), (622, 29870), (1030, 18038), (1244, 14935), (1555, 11948), (2060, 9019), (2987, 6220), (3110, 5974)]