20951307

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{541}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 32749808

約数和(自身を除く): 11798501

約数列:

[1, 3, 9, 13, 39, 117, 331, 541, 993, 1623, 2979, 4303, 4869, 7033, 12909, 21099, 38727, 63297, 179071, 537213, 1611639, 2327923, 6983769, 20951307]

約数ペア:

[(1, 20951307), (3, 6983769), (9, 2327923), (13, 1611639), (39, 537213), (117, 179071), (331, 63297), (541, 38727), (993, 21099), (1623, 12909), (2979, 7033), (4303, 4869)]