20984900

素因数分解:

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

素因数の和:1400

約数の個数: 36

約数和(自身を含む): 45838212

約数和(自身を除く): 24853312

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 173, 346, 692, 865, 1213, 1730, 2426, 3460, 4325, 4852, 6065, 8650, 12130, 17300, 24260, 30325, 60650, 121300, 209849, 419698, 839396, 1049245, 2098490, 4196980, 5246225, 10492450, 20984900]

約数ペア:

[(1, 20984900), (2, 10492450), (4, 5246225), (5, 4196980), (10, 2098490), (20, 1049245), (25, 839396), (50, 419698), (100, 209849), (173, 121300), (346, 60650), (692, 30325), (865, 24260), (1213, 17300), (1730, 12130), (2426, 8650), (3460, 6065), (4325, 4852)]