18450740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11981}}^1$

素因数の和:12008

約数の個数: 48

約数和(自身を含む): 48311424

約数和(自身を除く): 29860684

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11981, 23962, 47924, 59905, 83867, 119810, 131791, 167734, 239620, 263582, 335468, 419335, 527164, 658955, 838670, 922537, 1317910, 1677340, 1845074, 2635820, 3690148, 4612685, 9225370, 18450740]

約数ペア:

[(1, 18450740), (2, 9225370), (4, 4612685), (5, 3690148), (7, 2635820), (10, 1845074), (11, 1677340), (14, 1317910), (20, 922537), (22, 838670), (28, 658955), (35, 527164), (44, 419335), (55, 335468), (70, 263582), (77, 239620), (110, 167734), (140, 131791), (154, 119810), (220, 83867), (308, 59905), (385, 47924), (770, 23962), (1540, 11981)]