18870320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1138

約数の個数: 80

約数和(自身を含む): 51806208

約数和(自身を除く): 32935888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1087, 1240, 1736, 2170, 2174, 2480, 3472, 4340, 4348, 5435, 7609, 8680, 8696, 10870, 15218, 17360, 17392, 21740, 30436, 33697, 38045, 43480, 60872, 67394, 76090, 86960, 121744, 134788, 152180, 168485, 235879, 269576, 304360, 336970, 471758, 539152, 608720, 673940, 943516, 1179395, 1347880, 1887032, 2358790, 2695760, 3774064, 4717580, 9435160, 18870320]

約数ペア:

[(1, 18870320), (2, 9435160), (4, 4717580), (5, 3774064), (7, 2695760), (8, 2358790), (10, 1887032), (14, 1347880), (16, 1179395), (20, 943516), (28, 673940), (31, 608720), (35, 539152), (40, 471758), (56, 336970), (62, 304360), (70, 269576), (80, 235879), (112, 168485), (124, 152180), (140, 134788), (155, 121744), (217, 86960), (248, 76090), (280, 67394), (310, 60872), (434, 43480), (496, 38045), (560, 33697), (620, 30436), (868, 21740), (1085, 17392), (1087, 17360), (1240, 15218), (1736, 10870), (2170, 8696), (2174, 8680), (2480, 7609), (3472, 5435), (4340, 4348)]