21451318

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:377

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 18997706

約数列:

[1, 2, 7, 14, 23, 31, 46, 49, 62, 98, 161, 217, 307, 322, 434, 614, 713, 1127, 1426, 1519, 2149, 2254, 3038, 4298, 4991, 7061, 9517, 9982, 14122, 15043, 19034, 30086, 34937, 49427, 66619, 69874, 98854, 133238, 218891, 345989, 437782, 466333, 691978, 932666, 1532237, 3064474, 10725659, 21451318]

約数ペア:

[(1, 21451318), (2, 10725659), (7, 3064474), (14, 1532237), (23, 932666), (31, 691978), (46, 466333), (49, 437782), (62, 345989), (98, 218891), (161, 133238), (217, 98854), (307, 69874), (322, 66619), (434, 49427), (614, 34937), (713, 30086), (1127, 19034), (1426, 15043), (1519, 14122), (2149, 9982), (2254, 9517), (3038, 7061), (4298, 4991)]