18162340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 45505152

約数和(自身を除く): 27342812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 431, 490, 602, 860, 862, 980, 1204, 1505, 1724, 2107, 2155, 3010, 3017, 4214, 4310, 6020, 6034, 8428, 8620, 10535, 12068, 15085, 18533, 21070, 21119, 30170, 37066, 42140, 42238, 60340, 74132, 84476, 92665, 105595, 129731, 185330, 211190, 259462, 370660, 422380, 518924, 648655, 908117, 1297310, 1816234, 2594620, 3632468, 4540585, 9081170, 18162340]

約数ペア:

[(1, 18162340), (2, 9081170), (4, 4540585), (5, 3632468), (7, 2594620), (10, 1816234), (14, 1297310), (20, 908117), (28, 648655), (35, 518924), (43, 422380), (49, 370660), (70, 259462), (86, 211190), (98, 185330), (140, 129731), (172, 105595), (196, 92665), (215, 84476), (245, 74132), (301, 60340), (430, 42238), (431, 42140), (490, 37066), (602, 30170), (860, 21119), (862, 21070), (980, 18533), (1204, 15085), (1505, 12068), (1724, 10535), (2107, 8620), (2155, 8428), (3010, 6034), (3017, 6020), (4214, 4310)]