21909280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7207}}^1$

素因数の和:7241

約数の個数: 48

約数和(自身を含む): 54492480

約数和(自身を除く): 32583200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 7207, 14414, 28828, 36035, 57656, 72070, 115312, 136933, 144140, 230624, 273866, 288280, 547732, 576560, 684665, 1095464, 1153120, 1369330, 2190928, 2738660, 4381856, 5477320, 10954640, 21909280]

約数ペア:

[(1, 21909280), (2, 10954640), (4, 5477320), (5, 4381856), (8, 2738660), (10, 2190928), (16, 1369330), (19, 1153120), (20, 1095464), (32, 684665), (38, 576560), (40, 547732), (76, 288280), (80, 273866), (95, 230624), (152, 144140), (160, 136933), (190, 115312), (304, 72070), (380, 57656), (608, 36035), (760, 28828), (1520, 14414), (3040, 7207)]