21831400

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{6421}}^1$

素因数の和:6454

約数の個数: 48

約数和(自身を含む): 53752140

約数和(自身を除く): 31920740

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 6421, 12842, 25684, 32105, 51368, 64210, 109157, 128420, 160525, 218314, 256840, 321050, 436628, 545785, 642100, 873256, 1091570, 1284200, 2183140, 2728925, 4366280, 5457850, 10915700, 21831400]

約数ペア:

[(1, 21831400), (2, 10915700), (4, 5457850), (5, 4366280), (8, 2728925), (10, 2183140), (17, 1284200), (20, 1091570), (25, 873256), (34, 642100), (40, 545785), (50, 436628), (68, 321050), (85, 256840), (100, 218314), (136, 160525), (170, 128420), (200, 109157), (340, 64210), (425, 51368), (680, 32105), (850, 25684), (1700, 12842), (3400, 6421)]