21960100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{5107}}^1$

素因数の和:5164

約数の個数: 36

約数和(自身を含む): 48771184

約数和(自身を除く): 26811084

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 5107, 10214, 20428, 25535, 51070, 102140, 127675, 219601, 255350, 439202, 510700, 878404, 1098005, 2196010, 4392020, 5490025, 10980050, 21960100]

約数ペア:

[(1, 21960100), (2, 10980050), (4, 5490025), (5, 4392020), (10, 2196010), (20, 1098005), (25, 878404), (43, 510700), (50, 439202), (86, 255350), (100, 219601), (172, 127675), (215, 102140), (430, 51070), (860, 25535), (1075, 20428), (2150, 10214), (4300, 5107)]