21116763

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 31646160

約数和(自身を除く): 10529397

約数列:

[1, 3, 9, 41, 89, 123, 267, 369, 643, 801, 1929, 3649, 5787, 10947, 26363, 32841, 57227, 79089, 171681, 237267, 515043, 2346307, 7038921, 21116763]

約数ペア:

[(1, 21116763), (3, 7038921), (9, 2346307), (41, 515043), (89, 237267), (123, 171681), (267, 79089), (369, 57227), (643, 32841), (801, 26363), (1929, 10947), (3649, 5787)]