28184121

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 48657024

約数和(自身を除く): 20472903

約数列:

[1, 3, 7, 9, 21, 37, 63, 107, 111, 113, 259, 321, 333, 339, 749, 777, 791, 963, 1017, 2247, 2331, 2373, 3959, 4181, 6741, 7119, 11877, 12091, 12543, 27713, 29267, 35631, 36273, 37629, 83139, 84637, 87801, 108819, 249417, 253911, 263403, 447367, 761733, 1342101, 3131569, 4026303, 9394707, 28184121]

約数ペア:

[(1, 28184121), (3, 9394707), (7, 4026303), (9, 3131569), (21, 1342101), (37, 761733), (63, 447367), (107, 263403), (111, 253911), (113, 249417), (259, 108819), (321, 87801), (333, 84637), (339, 83139), (749, 37629), (777, 36273), (791, 35631), (963, 29267), (1017, 27713), (2247, 12543), (2331, 12091), (2373, 11877), (3959, 7119), (4181, 6741)]