20418400

素因数分解:

$2^5\times 5^2\times {\mathrm{25523}}^1$

素因数の和:25543

約数の個数: 36

約数和(自身を含む): 49848372

約数和(自身を除く): 29429972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25523, 51046, 102092, 127615, 204184, 255230, 408368, 510460, 638075, 816736, 1020920, 1276150, 2041840, 2552300, 4083680, 5104600, 10209200, 20418400]

約数ペア:

[(1, 20418400), (2, 10209200), (4, 5104600), (5, 4083680), (8, 2552300), (10, 2041840), (16, 1276150), (20, 1020920), (25, 816736), (32, 638075), (40, 510460), (50, 408368), (80, 255230), (100, 204184), (160, 127615), (200, 102092), (400, 51046), (800, 25523)]