71581940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1\times {\mathrm{281}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 154635264

約数和(自身を除く): 83053324

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 271, 281, 470, 542, 562, 940, 1084, 1124, 1355, 1405, 2710, 2810, 5420, 5620, 12737, 13207, 25474, 26414, 50948, 52828, 63685, 66035, 76151, 127370, 132070, 152302, 254740, 264140, 304604, 380755, 761510, 1523020, 3579097, 7158194, 14316388, 17895485, 35790970, 71581940]

約数ペア:

[(1, 71581940), (2, 35790970), (4, 17895485), (5, 14316388), (10, 7158194), (20, 3579097), (47, 1523020), (94, 761510), (188, 380755), (235, 304604), (271, 264140), (281, 254740), (470, 152302), (542, 132070), (562, 127370), (940, 76151), (1084, 66035), (1124, 63685), (1355, 52828), (1405, 50948), (2710, 26414), (2810, 25474), (5420, 13207), (5620, 12737)]