15281980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6421}}^1$

素因数の和:6454

約数の個数: 48

約数和(自身を含む): 38840256

約数和(自身を除く): 23558276

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 6421, 12842, 25684, 32105, 44947, 64210, 89894, 109157, 128420, 179788, 218314, 224735, 436628, 449470, 545785, 764099, 898940, 1091570, 1528198, 2183140, 3056396, 3820495, 7640990, 15281980]

約数ペア:

[(1, 15281980), (2, 7640990), (4, 3820495), (5, 3056396), (7, 2183140), (10, 1528198), (14, 1091570), (17, 898940), (20, 764099), (28, 545785), (34, 449470), (35, 436628), (68, 224735), (70, 218314), (85, 179788), (119, 128420), (140, 109157), (170, 89894), (238, 64210), (340, 44947), (476, 32105), (595, 25684), (1190, 12842), (2380, 6421)]