20482371

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 36953280

約数和(自身を除く): 16470909

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 89, 91, 117, 267, 273, 281, 623, 801, 819, 843, 1157, 1869, 1967, 2529, 3471, 3653, 5607, 5901, 8099, 10413, 10959, 17703, 24297, 25009, 25571, 32877, 72891, 75027, 76713, 175063, 225081, 230139, 325117, 525189, 975351, 1575567, 2275819, 2926053, 6827457, 20482371]

約数ペア:

[(1, 20482371), (3, 6827457), (7, 2926053), (9, 2275819), (13, 1575567), (21, 975351), (39, 525189), (63, 325117), (89, 230139), (91, 225081), (117, 175063), (267, 76713), (273, 75027), (281, 72891), (623, 32877), (801, 25571), (819, 25009), (843, 24297), (1157, 17703), (1869, 10959), (1967, 10413), (2529, 8099), (3471, 5901), (3653, 5607)]