778897898

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{1997}}^1$

素因数の和:2222

約数の個数: 32

約数和(自身を含む): 1248670080

約数和(自身を除く): 469772182

約数列:

[1, 2, 23, 46, 61, 122, 139, 278, 1403, 1997, 2806, 3197, 3994, 6394, 8479, 16958, 45931, 91862, 121817, 195017, 243634, 277583, 390034, 555166, 2801791, 5603582, 6384409, 12768818, 16932563, 33865126, 389448949, 778897898]

約数ペア:

[(1, 778897898), (2, 389448949), (23, 33865126), (46, 16932563), (61, 12768818), (122, 6384409), (139, 5603582), (278, 2801791), (1403, 555166), (1997, 390034), (2806, 277583), (3197, 243634), (3994, 195017), (6394, 121817), (8479, 91862), (16958, 45931)]