18271660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{157}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 44036496

約数和(自身を除く): 25764836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 157, 220, 230, 253, 314, 460, 506, 529, 628, 785, 1012, 1058, 1265, 1570, 1727, 2116, 2530, 2645, 3140, 3454, 3611, 5060, 5290, 5819, 6908, 7222, 8635, 10580, 11638, 14444, 17270, 18055, 23276, 29095, 34540, 36110, 39721, 58190, 72220, 79442, 83053, 116380, 158884, 166106, 198605, 332212, 397210, 415265, 794420, 830530, 913583, 1661060, 1827166, 3654332, 4567915, 9135830, 18271660]

約数ペア:

[(1, 18271660), (2, 9135830), (4, 4567915), (5, 3654332), (10, 1827166), (11, 1661060), (20, 913583), (22, 830530), (23, 794420), (44, 415265), (46, 397210), (55, 332212), (92, 198605), (110, 166106), (115, 158884), (157, 116380), (220, 83053), (230, 79442), (253, 72220), (314, 58190), (460, 39721), (506, 36110), (529, 34540), (628, 29095), (785, 23276), (1012, 18055), (1058, 17270), (1265, 14444), (1570, 11638), (1727, 10580), (2116, 8635), (2530, 7222), (2645, 6908), (3140, 5819), (3454, 5290), (3611, 5060)]