12987205

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 20355840

約数和(自身を除く): 7368635

約数列:

[1, 5, 7, 11, 35, 49, 55, 61, 77, 79, 245, 305, 385, 395, 427, 539, 553, 671, 869, 2135, 2695, 2765, 2989, 3355, 3871, 4345, 4697, 4819, 6083, 14945, 19355, 23485, 24095, 30415, 32879, 33733, 42581, 53009, 164395, 168665, 212905, 236131, 265045, 371063, 1180655, 1855315, 2597441, 12987205]

約数ペア:

[(1, 12987205), (5, 2597441), (7, 1855315), (11, 1180655), (35, 371063), (49, 265045), (55, 236131), (61, 212905), (77, 168665), (79, 164395), (245, 53009), (305, 42581), (385, 33733), (395, 32879), (427, 30415), (539, 24095), (553, 23485), (671, 19355), (869, 14945), (2135, 6083), (2695, 4819), (2765, 4697), (2989, 4345), (3355, 3871)]