20180655

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{691}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 38862720

約数和(自身を除く): 18682065

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 59, 99, 165, 177, 295, 495, 531, 649, 691, 885, 1947, 2073, 2655, 3245, 3455, 5841, 6219, 7601, 9735, 10365, 22803, 29205, 31095, 38005, 40769, 68409, 114015, 122307, 203845, 342045, 366921, 448459, 611535, 1345377, 1834605, 2242295, 4036131, 6726885, 20180655]

約数ペア:

[(1, 20180655), (3, 6726885), (5, 4036131), (9, 2242295), (11, 1834605), (15, 1345377), (33, 611535), (45, 448459), (55, 366921), (59, 342045), (99, 203845), (165, 122307), (177, 114015), (295, 68409), (495, 40769), (531, 38005), (649, 31095), (691, 29205), (885, 22803), (1947, 10365), (2073, 9735), (2655, 7601), (3245, 6219), (3455, 5841)]