28180347

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 42389760

約数和(自身を除く): 14209413

約数列:

[1, 3, 13, 37, 39, 59, 111, 177, 331, 481, 767, 993, 1443, 2183, 2301, 4303, 6549, 12247, 12909, 19529, 28379, 36741, 58587, 85137, 159211, 253877, 477633, 722573, 761631, 2167719, 9393449, 28180347]

約数ペア:

[(1, 28180347), (3, 9393449), (13, 2167719), (37, 761631), (39, 722573), (59, 477633), (111, 253877), (177, 159211), (331, 85137), (481, 58587), (767, 36741), (993, 28379), (1443, 19529), (2183, 12909), (2301, 12247), (4303, 6549)]