1218977560

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{743279}}^1$

素因数の和:743331

約数の個数: 32

約数和(自身を含む): 2809598400

約数和(自身を除く): 1590620840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 743279, 1486558, 2973116, 3716395, 5946232, 7432790, 14865580, 29731160, 30474439, 60948878, 121897756, 152372195, 243795512, 304744390, 609488780, 1218977560]

約数ペア:

[(1, 1218977560), (2, 609488780), (4, 304744390), (5, 243795512), (8, 152372195), (10, 121897756), (20, 60948878), (40, 30474439), (41, 29731160), (82, 14865580), (164, 7432790), (205, 5946232), (328, 3716395), (410, 2973116), (820, 1486558), (1640, 743279)]