18272920

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4523}}^1$

素因数の和:4635

約数の個数: 32

約数和(自身を含む): 41530320

約数和(自身を除く): 23257400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4523, 9046, 18092, 22615, 36184, 45230, 90460, 180920, 456823, 913646, 1827292, 2284115, 3654584, 4568230, 9136460, 18272920]

約数ペア:

[(1, 18272920), (2, 9136460), (4, 4568230), (5, 3654584), (8, 2284115), (10, 1827292), (20, 913646), (40, 456823), (101, 180920), (202, 90460), (404, 45230), (505, 36184), (808, 22615), (1010, 18092), (2020, 9046), (4040, 4523)]