2721040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:176

約数の個数: 80

約数和(自身を含む): 7463808

約数和(自身を除く): 4742768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 113, 140, 172, 215, 226, 280, 301, 344, 430, 452, 560, 565, 602, 688, 791, 860, 904, 1130, 1204, 1505, 1582, 1720, 1808, 2260, 2408, 3010, 3164, 3440, 3955, 4520, 4816, 4859, 6020, 6328, 7910, 9040, 9718, 12040, 12656, 15820, 19436, 24080, 24295, 31640, 34013, 38872, 48590, 63280, 68026, 77744, 97180, 136052, 170065, 194360, 272104, 340130, 388720, 544208, 680260, 1360520, 2721040]

約数ペア:

[(1, 2721040), (2, 1360520), (4, 680260), (5, 544208), (7, 388720), (8, 340130), (10, 272104), (14, 194360), (16, 170065), (20, 136052), (28, 97180), (35, 77744), (40, 68026), (43, 63280), (56, 48590), (70, 38872), (80, 34013), (86, 31640), (112, 24295), (113, 24080), (140, 19436), (172, 15820), (215, 12656), (226, 12040), (280, 9718), (301, 9040), (344, 7910), (430, 6328), (452, 6020), (560, 4859), (565, 4816), (602, 4520), (688, 3955), (791, 3440), (860, 3164), (904, 3010), (1130, 2408), (1204, 2260), (1505, 1808), (1582, 1720)]