20320407

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 30546048

約数和(自身を除く): 10225641

約数列:

[1, 3, 9, 31, 93, 173, 279, 421, 519, 1263, 1557, 3789, 5363, 13051, 16089, 39153, 48267, 72833, 117459, 218499, 655497, 2257823, 6773469, 20320407]

約数ペア:

[(1, 20320407), (3, 6773469), (9, 2257823), (31, 655497), (93, 218499), (173, 117459), (279, 72833), (421, 48267), (519, 39153), (1263, 16089), (1557, 13051), (3789, 5363)]