21706128

素因数分解:

$2^4\times 3^2\times {\mathrm{307}}^1\times {\mathrm{491}}^1$

素因数の和:812

約数の個数: 60

約数和(自身を含む): 61069008

約数和(自身を除く): 39362880

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 307, 491, 614, 921, 982, 1228, 1473, 1842, 1964, 2456, 2763, 2946, 3684, 3928, 4419, 4912, 5526, 5892, 7368, 7856, 8838, 11052, 11784, 14736, 17676, 22104, 23568, 35352, 44208, 70704, 150737, 301474, 452211, 602948, 904422, 1205896, 1356633, 1808844, 2411792, 2713266, 3617688, 5426532, 7235376, 10853064, 21706128]

約数ペア:

[(1, 21706128), (2, 10853064), (3, 7235376), (4, 5426532), (6, 3617688), (8, 2713266), (9, 2411792), (12, 1808844), (16, 1356633), (18, 1205896), (24, 904422), (36, 602948), (48, 452211), (72, 301474), (144, 150737), (307, 70704), (491, 44208), (614, 35352), (921, 23568), (982, 22104), (1228, 17676), (1473, 14736), (1842, 11784), (1964, 11052), (2456, 8838), (2763, 7856), (2946, 7368), (3684, 5892), (3928, 5526), (4419, 4912)]