21413912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10837}}^1$

素因数の和:10875

約数の個数: 32

約数和(自身を含む): 45519600

約数和(自身を除く): 24105688

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10837, 21674, 43348, 86696, 140881, 205903, 281762, 411806, 563524, 823612, 1127048, 1647224, 2676739, 5353478, 10706956, 21413912]

約数ペア:

[(1, 21413912), (2, 10706956), (4, 5353478), (8, 2676739), (13, 1647224), (19, 1127048), (26, 823612), (38, 563524), (52, 411806), (76, 281762), (104, 205903), (152, 140881), (247, 86696), (494, 43348), (988, 21674), (1976, 10837)]