278320880

素因数分解:

$2^4\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{2699}}^1$

素因数の和:4001

約数の個数: 40

約数和(自身を含む): 647838000

約数和(自身を除く): 369517120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1289, 2578, 2699, 5156, 5398, 6445, 10312, 10796, 12890, 13495, 20624, 21592, 25780, 26990, 43184, 51560, 53980, 103120, 107960, 215920, 3479011, 6958022, 13916044, 17395055, 27832088, 34790110, 55664176, 69580220, 139160440, 278320880]

約数ペア:

[(1, 278320880), (2, 139160440), (4, 69580220), (5, 55664176), (8, 34790110), (10, 27832088), (16, 17395055), (20, 13916044), (40, 6958022), (80, 3479011), (1289, 215920), (2578, 107960), (2699, 103120), (5156, 53980), (5398, 51560), (6445, 43184), (10312, 26990), (10796, 25780), (12890, 21592), (13495, 20624)]