21876880

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1811}}^1$

素因数の和:1975

約数の個数: 40

約数和(自身を含む): 51228864

約数和(自身を除く): 29351984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1811, 2416, 3020, 3622, 6040, 7244, 9055, 12080, 14488, 18110, 28976, 36220, 72440, 144880, 273461, 546922, 1093844, 1367305, 2187688, 2734610, 4375376, 5469220, 10938440, 21876880]

約数ペア:

[(1, 21876880), (2, 10938440), (4, 5469220), (5, 4375376), (8, 2734610), (10, 2187688), (16, 1367305), (20, 1093844), (40, 546922), (80, 273461), (151, 144880), (302, 72440), (604, 36220), (755, 28976), (1208, 18110), (1510, 14488), (1811, 12080), (2416, 9055), (3020, 7244), (3622, 6040)]