21291363964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1\times {\mathrm{12263}}^1$

素因数の和:12646

約数の個数: 48

約数和(自身を含む): 40570391232

約数和(自身を除く): 19279027268

約数列:

[1, 2, 4, 13, 26, 52, 173, 193, 346, 386, 692, 772, 2249, 2509, 4498, 5018, 8996, 10036, 12263, 24526, 33389, 49052, 66778, 133556, 159419, 318838, 434057, 637676, 868114, 1736228, 2121499, 2366759, 4242998, 4733518, 8485996, 9467036, 27579487, 30767867, 55158974, 61535734, 110317948, 123071468, 409449307, 818898614, 1637797228, 5322840991, 10645681982, 21291363964]

約数ペア:

[(1, 21291363964), (2, 10645681982), (4, 5322840991), (13, 1637797228), (26, 818898614), (52, 409449307), (173, 123071468), (193, 110317948), (346, 61535734), (386, 55158974), (692, 30767867), (772, 27579487), (2249, 9467036), (2509, 8485996), (4498, 4733518), (5018, 4242998), (8996, 2366759), (10036, 2121499), (12263, 1736228), (24526, 868114), (33389, 637676), (49052, 434057), (66778, 318838), (133556, 159419)]