28866357

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 49690368

約数和(自身を除く): 20824011

約数列:

[1, 3, 9, 13, 17, 23, 39, 51, 69, 117, 153, 207, 221, 299, 391, 631, 663, 897, 1173, 1893, 1989, 2691, 3519, 5083, 5679, 8203, 10727, 14513, 15249, 24609, 32181, 43539, 45747, 73827, 96543, 130617, 139451, 188669, 246721, 418353, 566007, 740163, 1255059, 1698021, 2220489, 3207373, 9622119, 28866357]

約数ペア:

[(1, 28866357), (3, 9622119), (9, 3207373), (13, 2220489), (17, 1698021), (23, 1255059), (39, 740163), (51, 566007), (69, 418353), (117, 246721), (153, 188669), (207, 139451), (221, 130617), (299, 96543), (391, 73827), (631, 45747), (663, 43539), (897, 32181), (1173, 24609), (1893, 15249), (1989, 14513), (2691, 10727), (3519, 8203), (5083, 5679)]