2018128880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{413551}}^1$

素因数の和:413625

約数の個数: 40

約数和(自身を含む): 4769081664

約数和(自身を除く): 2750952784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 413551, 827102, 1654204, 2067755, 3308408, 4135510, 6616816, 8271020, 16542040, 25226611, 33084080, 50453222, 100906444, 126133055, 201812888, 252266110, 403625776, 504532220, 1009064440, 2018128880]

約数ペア:

[(1, 2018128880), (2, 1009064440), (4, 504532220), (5, 403625776), (8, 252266110), (10, 201812888), (16, 126133055), (20, 100906444), (40, 50453222), (61, 33084080), (80, 25226611), (122, 16542040), (244, 8271020), (305, 6616816), (488, 4135510), (610, 3308408), (976, 2067755), (1220, 1654204), (2440, 827102), (4880, 413551)]