19958800

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1217}}^1$

素因数の和:1276

約数の個数: 60

約数和(自身を含む): 49160916

約数和(自身を除く): 29202116

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1217, 1640, 2050, 2434, 3280, 4100, 4868, 6085, 8200, 9736, 12170, 16400, 19472, 24340, 30425, 48680, 49897, 60850, 97360, 99794, 121700, 199588, 243400, 249485, 399176, 486800, 498970, 798352, 997940, 1247425, 1995880, 2494850, 3991760, 4989700, 9979400, 19958800]

約数ペア:

[(1, 19958800), (2, 9979400), (4, 4989700), (5, 3991760), (8, 2494850), (10, 1995880), (16, 1247425), (20, 997940), (25, 798352), (40, 498970), (41, 486800), (50, 399176), (80, 249485), (82, 243400), (100, 199588), (164, 121700), (200, 99794), (205, 97360), (328, 60850), (400, 49897), (410, 48680), (656, 30425), (820, 24340), (1025, 19472), (1217, 16400), (1640, 12170), (2050, 9736), (2434, 8200), (3280, 6085), (4100, 4868)]