20213440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:186

約数の個数: 112

約数和(自身を含む): 53510688

約数和(自身を除く): 33297248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 43, 52, 64, 65, 80, 86, 104, 113, 130, 160, 172, 208, 215, 226, 260, 320, 344, 416, 430, 452, 520, 559, 565, 688, 832, 860, 904, 1040, 1118, 1130, 1376, 1469, 1720, 1808, 2080, 2236, 2260, 2752, 2795, 2938, 3440, 3616, 4160, 4472, 4520, 4859, 5590, 5876, 6880, 7232, 7345, 8944, 9040, 9718, 11180, 11752, 13760, 14690, 17888, 18080, 19436, 22360, 23504, 24295, 29380, 35776, 36160, 38872, 44720, 47008, 48590, 58760, 63167, 77744, 89440, 94016, 97180, 117520, 126334, 155488, 178880, 194360, 235040, 252668, 310976, 315835, 388720, 470080, 505336, 631670, 777440, 1010672, 1263340, 1554880, 2021344, 2526680, 4042688, 5053360, 10106720, 20213440]

約数ペア:

[(1, 20213440), (2, 10106720), (4, 5053360), (5, 4042688), (8, 2526680), (10, 2021344), (13, 1554880), (16, 1263340), (20, 1010672), (26, 777440), (32, 631670), (40, 505336), (43, 470080), (52, 388720), (64, 315835), (65, 310976), (80, 252668), (86, 235040), (104, 194360), (113, 178880), (130, 155488), (160, 126334), (172, 117520), (208, 97180), (215, 94016), (226, 89440), (260, 77744), (320, 63167), (344, 58760), (416, 48590), (430, 47008), (452, 44720), (520, 38872), (559, 36160), (565, 35776), (688, 29380), (832, 24295), (860, 23504), (904, 22360), (1040, 19436), (1118, 18080), (1130, 17888), (1376, 14690), (1469, 13760), (1720, 11752), (1808, 11180), (2080, 9718), (2236, 9040), (2260, 8944), (2752, 7345), (2795, 7232), (2938, 6880), (3440, 5876), (3616, 5590), (4160, 4859), (4472, 4520)]