20864270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 25325170

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 89, 119, 170, 178, 197, 238, 394, 445, 595, 623, 890, 985, 1190, 1246, 1379, 1513, 1970, 2758, 3026, 3115, 3349, 6230, 6698, 6895, 7565, 10591, 13790, 15130, 16745, 17533, 21182, 23443, 33490, 35066, 46886, 52955, 87665, 105910, 117215, 122731, 175330, 234430, 245462, 298061, 596122, 613655, 1227310, 1490305, 2086427, 2980610, 4172854, 10432135, 20864270]

約数ペア:

[(1, 20864270), (2, 10432135), (5, 4172854), (7, 2980610), (10, 2086427), (14, 1490305), (17, 1227310), (34, 613655), (35, 596122), (70, 298061), (85, 245462), (89, 234430), (119, 175330), (170, 122731), (178, 117215), (197, 105910), (238, 87665), (394, 52955), (445, 46886), (595, 35066), (623, 33490), (890, 23443), (985, 21182), (1190, 17533), (1246, 16745), (1379, 15130), (1513, 13790), (1970, 10591), (2758, 7565), (3026, 6895), (3115, 6698), (3349, 6230)]