989991212

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{577}}^1\times {\mathrm{2113}}^1$

素因数の和:2730

約数の個数: 48

約数和(自身を含む): 2052778560

約数和(自身を除く): 1062787348

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 577, 812, 1154, 2113, 2308, 4039, 4226, 8078, 8452, 14791, 16156, 16733, 29582, 33466, 59164, 61277, 66932, 117131, 122554, 234262, 245108, 428939, 468524, 857878, 1219201, 1715756, 2438402, 4876804, 8534407, 17068814, 34137628, 35356829, 70713658, 141427316, 247497803, 494995606, 989991212]

約数ペア:

[(1, 989991212), (2, 494995606), (4, 247497803), (7, 141427316), (14, 70713658), (28, 35356829), (29, 34137628), (58, 17068814), (116, 8534407), (203, 4876804), (406, 2438402), (577, 1715756), (812, 1219201), (1154, 857878), (2113, 468524), (2308, 428939), (4039, 245108), (4226, 234262), (8078, 122554), (8452, 117131), (14791, 66932), (16156, 61277), (16733, 59164), (29582, 33466)]