245640820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1\times {\mathrm{1093}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 547516368

約数和(自身を除く): 301875548

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 661, 1093, 1322, 2186, 2644, 3305, 4372, 5465, 6610, 10930, 11237, 13220, 18581, 21860, 22474, 37162, 44948, 56185, 74324, 92905, 112370, 185810, 224740, 371620, 722473, 1444946, 2889892, 3612365, 7224730, 12282041, 14449460, 24564082, 49128164, 61410205, 122820410, 245640820]

約数ペア:

[(1, 245640820), (2, 122820410), (4, 61410205), (5, 49128164), (10, 24564082), (17, 14449460), (20, 12282041), (34, 7224730), (68, 3612365), (85, 2889892), (170, 1444946), (340, 722473), (661, 371620), (1093, 224740), (1322, 185810), (2186, 112370), (2644, 92905), (3305, 74324), (4372, 56185), (5465, 44948), (6610, 37162), (10930, 22474), (11237, 21860), (13220, 18581)]