18948545

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 29548800

約数和(自身を除く): 10600255

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 79, 89, 245, 385, 395, 445, 539, 553, 623, 869, 979, 2695, 2765, 3115, 3871, 4345, 4361, 4895, 6083, 6853, 7031, 19355, 21805, 30415, 34265, 35155, 42581, 47971, 49217, 77341, 212905, 239855, 246085, 344519, 386705, 541387, 1722595, 2706935, 3789709, 18948545]

約数ペア:

[(1, 18948545), (5, 3789709), (7, 2706935), (11, 1722595), (35, 541387), (49, 386705), (55, 344519), (77, 246085), (79, 239855), (89, 212905), (245, 77341), (385, 49217), (395, 47971), (445, 42581), (539, 35155), (553, 34265), (623, 30415), (869, 21805), (979, 19355), (2695, 7031), (2765, 6853), (3115, 6083), (3871, 4895), (4345, 4361)]