21720168

素因数分解:

$2^3\times 3^2\times {\mathrm{301669}}^1$

素因数の和:301681

約数の個数: 24

約数和(自身を含む): 58825650

約数和(自身を除く): 37105482

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 301669, 603338, 905007, 1206676, 1810014, 2413352, 2715021, 3620028, 5430042, 7240056, 10860084, 21720168]

約数ペア:

[(1, 21720168), (2, 10860084), (3, 7240056), (4, 5430042), (6, 3620028), (8, 2715021), (9, 2413352), (12, 1810014), (18, 1206676), (24, 905007), (36, 603338), (72, 301669)]