28087761

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 42561792

約数和(自身を除く): 14474031

約数列:

[1, 3, 13, 23, 39, 69, 173, 181, 299, 519, 543, 897, 2249, 2353, 3979, 4163, 6747, 7059, 11937, 12489, 31313, 51727, 54119, 93939, 155181, 162357, 407069, 720199, 1221207, 2160597, 9362587, 28087761]

約数ペア:

[(1, 28087761), (3, 9362587), (13, 2160597), (23, 1221207), (39, 720199), (69, 407069), (173, 162357), (181, 155181), (299, 93939), (519, 54119), (543, 51727), (897, 31313), (2249, 12489), (2353, 11937), (3979, 7059), (4163, 6747)]