215000

素因数分解:

$2^3\times 5^4\times {\mathrm{43}}^1$

素因数の和:69

約数の個数: 40

約数和(自身を含む): 515460

約数和(自身を除く): 300460

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 625, 860, 1000, 1075, 1250, 1720, 2150, 2500, 4300, 5000, 5375, 8600, 10750, 21500, 26875, 43000, 53750, 107500, 215000]

約数ペア:

[(1, 215000), (2, 107500), (4, 53750), (5, 43000), (8, 26875), (10, 21500), (20, 10750), (25, 8600), (40, 5375), (43, 5000), (50, 4300), (86, 2500), (100, 2150), (125, 1720), (172, 1250), (200, 1075), (215, 1000), (250, 860), (344, 625), (430, 500)]