28724720

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2287}}^1$

素因数の和:2457

約数の個数: 40

約数和(自身を含む): 67239744

約数和(自身を除く): 38515024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1570, 2287, 2512, 3140, 4574, 6280, 9148, 11435, 12560, 18296, 22870, 36592, 45740, 91480, 182960, 359059, 718118, 1436236, 1795295, 2872472, 3590590, 5744944, 7181180, 14362360, 28724720]

約数ペア:

[(1, 28724720), (2, 14362360), (4, 7181180), (5, 5744944), (8, 3590590), (10, 2872472), (16, 1795295), (20, 1436236), (40, 718118), (80, 359059), (157, 182960), (314, 91480), (628, 45740), (785, 36592), (1256, 22870), (1570, 18296), (2287, 12560), (2512, 11435), (3140, 9148), (4574, 6280)]