21231400

素因数分解:

$2^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{1279}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 49996800

約数和(自身を除く): 28765400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 83, 100, 166, 200, 332, 415, 664, 830, 1279, 1660, 2075, 2558, 3320, 4150, 5116, 6395, 8300, 10232, 12790, 16600, 25580, 31975, 51160, 63950, 106157, 127900, 212314, 255800, 424628, 530785, 849256, 1061570, 2123140, 2653925, 4246280, 5307850, 10615700, 21231400]

約数ペア:

[(1, 21231400), (2, 10615700), (4, 5307850), (5, 4246280), (8, 2653925), (10, 2123140), (20, 1061570), (25, 849256), (40, 530785), (50, 424628), (83, 255800), (100, 212314), (166, 127900), (200, 106157), (332, 63950), (415, 51160), (664, 31975), (830, 25580), (1279, 16600), (1660, 12790), (2075, 10232), (2558, 8300), (3320, 6395), (4150, 5116)]