21212480

素因数分解:

$2^6\times 5^1\times {\mathrm{151}}^1\times {\mathrm{439}}^1$

素因数の和:607

約数の個数: 56

約数和(自身を含む): 50962560

約数和(自身を除く): 29750080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 151, 160, 302, 320, 439, 604, 755, 878, 1208, 1510, 1756, 2195, 2416, 3020, 3512, 4390, 4832, 6040, 7024, 8780, 9664, 12080, 14048, 17560, 24160, 28096, 35120, 48320, 66289, 70240, 132578, 140480, 265156, 331445, 530312, 662890, 1060624, 1325780, 2121248, 2651560, 4242496, 5303120, 10606240, 21212480]

約数ペア:

[(1, 21212480), (2, 10606240), (4, 5303120), (5, 4242496), (8, 2651560), (10, 2121248), (16, 1325780), (20, 1060624), (32, 662890), (40, 530312), (64, 331445), (80, 265156), (151, 140480), (160, 132578), (302, 70240), (320, 66289), (439, 48320), (604, 35120), (755, 28096), (878, 24160), (1208, 17560), (1510, 14048), (1756, 12080), (2195, 9664), (2416, 8780), (3020, 7024), (3512, 6040), (4390, 4832)]