21945200

素因数分解:

$2^4\times 5^2\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:762

約数の個数: 60

約数和(自身を含む): 53439288

約数和(自身を除く): 31494088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 83, 100, 166, 200, 332, 400, 415, 661, 664, 830, 1322, 1328, 1660, 2075, 2644, 3305, 3320, 4150, 5288, 6610, 6640, 8300, 10576, 13220, 16525, 16600, 26440, 33050, 33200, 52880, 54863, 66100, 109726, 132200, 219452, 264400, 274315, 438904, 548630, 877808, 1097260, 1371575, 2194520, 2743150, 4389040, 5486300, 10972600, 21945200]

約数ペア:

[(1, 21945200), (2, 10972600), (4, 5486300), (5, 4389040), (8, 2743150), (10, 2194520), (16, 1371575), (20, 1097260), (25, 877808), (40, 548630), (50, 438904), (80, 274315), (83, 264400), (100, 219452), (166, 132200), (200, 109726), (332, 66100), (400, 54863), (415, 52880), (661, 33200), (664, 33050), (830, 26440), (1322, 16600), (1328, 16525), (1660, 13220), (2075, 10576), (2644, 8300), (3305, 6640), (3320, 6610), (4150, 5288)]