128820376

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{521}}^1\times {\mathrm{997}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 250058880

約数和(自身を除く): 121238504

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 521, 997, 1042, 1994, 2084, 3988, 4168, 7976, 16151, 30907, 32302, 61814, 64604, 123628, 129208, 247256, 519437, 1038874, 2077748, 4155496, 16102547, 32205094, 64410188, 128820376]

約数ペア:

[(1, 128820376), (2, 64410188), (4, 32205094), (8, 16102547), (31, 4155496), (62, 2077748), (124, 1038874), (248, 519437), (521, 247256), (997, 129208), (1042, 123628), (1994, 64604), (2084, 61814), (3988, 32302), (4168, 30907), (7976, 16151)]