4980440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1399}}^1$

素因数の和:1499

約数の個数: 32

約数和(自身を含む): 11340000

約数和(自身を除く): 6359560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1399, 1780, 2798, 3560, 5596, 6995, 11192, 13990, 27980, 55960, 124511, 249022, 498044, 622555, 996088, 1245110, 2490220, 4980440]

約数ペア:

[(1, 4980440), (2, 2490220), (4, 1245110), (5, 996088), (8, 622555), (10, 498044), (20, 249022), (40, 124511), (89, 55960), (178, 27980), (356, 13990), (445, 11192), (712, 6995), (890, 5596), (1399, 3560), (1780, 2798)]