1980880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2251}}^1$

素因数の和:2275

約数の個数: 40

約数和(自身を含む): 5026464

約数和(自身を除く): 3045584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 2251, 4502, 9004, 11255, 18008, 22510, 24761, 36016, 45020, 49522, 90040, 99044, 123805, 180080, 198088, 247610, 396176, 495220, 990440, 1980880]

約数ペア:

[(1, 1980880), (2, 990440), (4, 495220), (5, 396176), (8, 247610), (10, 198088), (11, 180080), (16, 123805), (20, 99044), (22, 90040), (40, 49522), (44, 45020), (55, 36016), (80, 24761), (88, 22510), (110, 18008), (176, 11255), (220, 9004), (440, 4502), (880, 2251)]