204958640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59581}}^1$

素因数の和:59637

約数の個数: 40

約数和(自身を含む): 487619088

約数和(自身を除く): 282660448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 59581, 119162, 238324, 297905, 476648, 595810, 953296, 1191620, 2383240, 2561983, 4766480, 5123966, 10247932, 12809915, 20495864, 25619830, 40991728, 51239660, 102479320, 204958640]

約数ペア:

[(1, 204958640), (2, 102479320), (4, 51239660), (5, 40991728), (8, 25619830), (10, 20495864), (16, 12809915), (20, 10247932), (40, 5123966), (43, 4766480), (80, 2561983), (86, 2383240), (172, 1191620), (215, 953296), (344, 595810), (430, 476648), (688, 297905), (860, 238324), (1720, 119162), (3440, 59581)]