20969109

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2797}}^1$

素因数の和:2834

約数の個数: 36

約数和(自身を含む): 37319724

約数和(自身を除く): 16350615

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2797, 7497, 8391, 19579, 25173, 47549, 58737, 137053, 142647, 176211, 332843, 411159, 427941, 998529, 1233477, 2329901, 2995587, 6989703, 20969109]

約数ペア:

[(1, 20969109), (3, 6989703), (7, 2995587), (9, 2329901), (17, 1233477), (21, 998529), (49, 427941), (51, 411159), (63, 332843), (119, 176211), (147, 142647), (153, 137053), (357, 58737), (441, 47549), (833, 25173), (1071, 19579), (2499, 8391), (2797, 7497)]