21206680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48197}}^1$

素因数の和:48219

約数の個数: 32

約数和(自身を含む): 52053840

約数和(自身を除く): 30847160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48197, 96394, 192788, 240985, 385576, 481970, 530167, 963940, 1060334, 1927880, 2120668, 2650835, 4241336, 5301670, 10603340, 21206680]

約数ペア:

[(1, 21206680), (2, 10603340), (4, 5301670), (5, 4241336), (8, 2650835), (10, 2120668), (11, 1927880), (20, 1060334), (22, 963940), (40, 530167), (44, 481970), (55, 385576), (88, 240985), (110, 192788), (220, 96394), (440, 48197)]