21105200

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2777}}^1$

素因数の和:2814

約数の個数: 60

約数和(自身を含む): 53393160

約数和(自身を除く): 32287960

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, 2777, 3800, 5554, 7600, 11108, 13885, 22216, 27770, 44432, 52763, 55540, 69425, 105526, 111080, 138850, 211052, 222160, 263815, 277700, 422104, 527630, 555400, 844208, 1055260, 1110800, 1319075, 2110520, 2638150, 4221040, 5276300, 10552600, 21105200]

約数ペア:

[(1, 21105200), (2, 10552600), (4, 5276300), (5, 4221040), (8, 2638150), (10, 2110520), (16, 1319075), (19, 1110800), (20, 1055260), (25, 844208), (38, 555400), (40, 527630), (50, 422104), (76, 277700), (80, 263815), (95, 222160), (100, 211052), (152, 138850), (190, 111080), (200, 105526), (304, 69425), (380, 55540), (400, 52763), (475, 44432), (760, 27770), (950, 22216), (1520, 13885), (1900, 11108), (2777, 7600), (3800, 5554)]