19776309

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 31309824

約数和(自身を除く): 11533515

約数列:

[1, 3, 7, 21, 41, 103, 123, 223, 287, 309, 669, 721, 861, 1561, 2163, 4223, 4683, 9143, 12669, 22969, 27429, 29561, 64001, 68907, 88683, 160783, 192003, 482349, 941729, 2825187, 6592103, 19776309]

約数ペア:

[(1, 19776309), (3, 6592103), (7, 2825187), (21, 941729), (41, 482349), (103, 192003), (123, 160783), (223, 88683), (287, 68907), (309, 64001), (669, 29561), (721, 27429), (861, 22969), (1561, 12669), (2163, 9143), (4223, 4683)]