1991540360

素因数分解:

$2^3\times 5^1\times {\mathrm{3323}}^1\times {\mathrm{14983}}^1$

素因数の和:18317

約数の個数: 32

約数和(自身を含む): 4482613440

約数和(自身を除く): 2491073080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3323, 6646, 13292, 14983, 16615, 26584, 29966, 33230, 59932, 66460, 74915, 119864, 132920, 149830, 299660, 599320, 49788509, 99577018, 199154036, 248942545, 398308072, 497885090, 995770180, 1991540360]

約数ペア:

[(1, 1991540360), (2, 995770180), (4, 497885090), (5, 398308072), (8, 248942545), (10, 199154036), (20, 99577018), (40, 49788509), (3323, 599320), (6646, 299660), (13292, 149830), (14983, 132920), (16615, 119864), (26584, 74915), (29966, 66460), (33230, 59932)]