21880400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2879}}^1$

素因数の和:2916

約数の個数: 60

約数和(自身を含む): 55353600

約数和(自身を除く): 33473200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2879, 3800, 5758, 7600, 11516, 14395, 23032, 28790, 46064, 54701, 57580, 71975, 109402, 115160, 143950, 218804, 230320, 273505, 287900, 437608, 547010, 575800, 875216, 1094020, 1151600, 1367525, 2188040, 2735050, 4376080, 5470100, 10940200, 21880400]

約数ペア:

[(1, 21880400), (2, 10940200), (4, 5470100), (5, 4376080), (8, 2735050), (10, 2188040), (16, 1367525), (19, 1151600), (20, 1094020), (25, 875216), (38, 575800), (40, 547010), (50, 437608), (76, 287900), (80, 273505), (95, 230320), (100, 218804), (152, 143950), (190, 115160), (200, 109402), (304, 71975), (380, 57580), (400, 54701), (475, 46064), (760, 28790), (950, 23032), (1520, 14395), (1900, 11516), (2879, 7600), (3800, 5758)]