2198020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 5136768

約数和(自身を除く): 2938748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 103, 110, 194, 206, 220, 388, 412, 485, 515, 970, 1030, 1067, 1133, 1940, 2060, 2134, 2266, 4268, 4532, 5335, 5665, 9991, 10670, 11330, 19982, 21340, 22660, 39964, 49955, 99910, 109901, 199820, 219802, 439604, 549505, 1099010, 2198020]

約数ペア:

[(1, 2198020), (2, 1099010), (4, 549505), (5, 439604), (10, 219802), (11, 199820), (20, 109901), (22, 99910), (44, 49955), (55, 39964), (97, 22660), (103, 21340), (110, 19982), (194, 11330), (206, 10670), (220, 9991), (388, 5665), (412, 5335), (485, 4532), (515, 4268), (970, 2266), (1030, 2134), (1067, 2060), (1133, 1940)]