1280348020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2099}}^1\times {\mathrm{4357}}^1$

素因数の和:6472

約数の個数: 48

約数和(自身を含む): 3075004800

約数和(自身を除く): 1794656780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2099, 4198, 4357, 8396, 8714, 10495, 14693, 17428, 20990, 21785, 29386, 30499, 41980, 43570, 58772, 60998, 73465, 87140, 121996, 146930, 152495, 293860, 304990, 609980, 9145343, 18290686, 36581372, 45726715, 64017401, 91453430, 128034802, 182906860, 256069604, 320087005, 640174010, 1280348020]

約数ペア:

[(1, 1280348020), (2, 640174010), (4, 320087005), (5, 256069604), (7, 182906860), (10, 128034802), (14, 91453430), (20, 64017401), (28, 45726715), (35, 36581372), (70, 18290686), (140, 9145343), (2099, 609980), (4198, 304990), (4357, 293860), (8396, 152495), (8714, 146930), (10495, 121996), (14693, 87140), (17428, 73465), (20990, 60998), (21785, 58772), (29386, 43570), (30499, 41980)]