19809969560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4543571}}^1$

素因数の和:4543691

約数の個数: 32

約数和(自身を含む): 44981362800

約数和(自身を除く): 25171393240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4543571, 9087142, 18174284, 22717855, 36348568, 45435710, 90871420, 181742840, 495249239, 990498478, 1980996956, 2476246195, 3961993912, 4952492390, 9904984780, 19809969560]

約数ペア:

[(1, 19809969560), (2, 9904984780), (4, 4952492390), (5, 3961993912), (8, 2476246195), (10, 1980996956), (20, 990498478), (40, 495249239), (109, 181742840), (218, 90871420), (436, 45435710), (545, 36348568), (872, 22717855), (1090, 18174284), (2180, 9087142), (4360, 4543571)]