2559560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1049}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 5859000

約数和(自身を除く): 3299440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1049, 1220, 2098, 2440, 4196, 5245, 8392, 10490, 20980, 41960, 63989, 127978, 255956, 319945, 511912, 639890, 1279780, 2559560]

約数ペア:

[(1, 2559560), (2, 1279780), (4, 639890), (5, 511912), (8, 319945), (10, 255956), (20, 127978), (40, 63989), (61, 41960), (122, 20980), (244, 10490), (305, 8392), (488, 5245), (610, 4196), (1049, 2440), (1220, 2098)]