256427440

素因数分解:

$2^4\times 5^1\times {\mathrm{727}}^1\times {\mathrm{4409}}^1$

素因数の和:5149

約数の個数: 40

約数和(自身を含む): 597149280

約数和(自身を除く): 340721840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 727, 1454, 2908, 3635, 4409, 5816, 7270, 8818, 11632, 14540, 17636, 22045, 29080, 35272, 44090, 58160, 70544, 88180, 176360, 352720, 3205343, 6410686, 12821372, 16026715, 25642744, 32053430, 51285488, 64106860, 128213720, 256427440]

約数ペア:

[(1, 256427440), (2, 128213720), (4, 64106860), (5, 51285488), (8, 32053430), (10, 25642744), (16, 16026715), (20, 12821372), (40, 6410686), (80, 3205343), (727, 352720), (1454, 176360), (2908, 88180), (3635, 70544), (4409, 58160), (5816, 44090), (7270, 35272), (8818, 29080), (11632, 22045), (14540, 17636)]