20600920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8443}}^1$

素因数の和:8515

約数の個数: 32

約数和(自身を含む): 47117520

約数和(自身を除く): 26516600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8443, 16886, 33772, 42215, 67544, 84430, 168860, 337720, 515023, 1030046, 2060092, 2575115, 4120184, 5150230, 10300460, 20600920]

約数ペア:

[(1, 20600920), (2, 10300460), (4, 5150230), (5, 4120184), (8, 2575115), (10, 2060092), (20, 1030046), (40, 515023), (61, 337720), (122, 168860), (244, 84430), (305, 67544), (488, 42215), (610, 33772), (1220, 16886), (2440, 8443)]