21315321

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4021}}^1$

素因数の和:4077

約数の個数: 24

約数和(自身を含む): 33463040

約数和(自身を除く): 12147719

約数列:

[1, 3, 9, 19, 31, 57, 93, 171, 279, 589, 1767, 4021, 5301, 12063, 36189, 76399, 124651, 229197, 373953, 687591, 1121859, 2368369, 7105107, 21315321]

約数ペア:

[(1, 21315321), (3, 7105107), (9, 2368369), (19, 1121859), (31, 687591), (57, 373953), (93, 229197), (171, 124651), (279, 76399), (589, 36189), (1767, 12063), (4021, 5301)]