18397940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{347}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 42444864

約数和(自身を除く): 24046924

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 241, 347, 482, 694, 964, 1205, 1388, 1735, 2410, 2651, 3470, 3817, 4820, 5302, 6940, 7634, 10604, 13255, 15268, 19085, 26510, 38170, 53020, 76340, 83627, 167254, 334508, 418135, 836270, 919897, 1672540, 1839794, 3679588, 4599485, 9198970, 18397940]

約数ペア:

[(1, 18397940), (2, 9198970), (4, 4599485), (5, 3679588), (10, 1839794), (11, 1672540), (20, 919897), (22, 836270), (44, 418135), (55, 334508), (110, 167254), (220, 83627), (241, 76340), (347, 53020), (482, 38170), (694, 26510), (964, 19085), (1205, 15268), (1388, 13255), (1735, 10604), (2410, 7634), (2651, 6940), (3470, 5302), (3817, 4820)]