16787920

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1213}}^1$

素因数の和:1399

約数の個数: 40

約数和(自身を含む): 39289896

約数和(自身を除く): 22501976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1213, 1384, 1730, 2426, 2768, 3460, 4852, 6065, 6920, 9704, 12130, 13840, 19408, 24260, 48520, 97040, 209849, 419698, 839396, 1049245, 1678792, 2098490, 3357584, 4196980, 8393960, 16787920]

約数ペア:

[(1, 16787920), (2, 8393960), (4, 4196980), (5, 3357584), (8, 2098490), (10, 1678792), (16, 1049245), (20, 839396), (40, 419698), (80, 209849), (173, 97040), (346, 48520), (692, 24260), (865, 19408), (1213, 13840), (1384, 12130), (1730, 9704), (2426, 6920), (2768, 6065), (3460, 4852)]