21195440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5407}}^1$

素因数の和:5434

約数の個数: 60

約数和(自身を含む): 57335616

約数和(自身を除く): 36140176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5407, 10814, 21628, 27035, 37849, 43256, 54070, 75698, 86512, 108140, 151396, 189245, 216280, 264943, 302792, 378490, 432560, 529886, 605584, 756980, 1059772, 1324715, 1513960, 2119544, 2649430, 3027920, 4239088, 5298860, 10597720, 21195440]

約数ペア:

[(1, 21195440), (2, 10597720), (4, 5298860), (5, 4239088), (7, 3027920), (8, 2649430), (10, 2119544), (14, 1513960), (16, 1324715), (20, 1059772), (28, 756980), (35, 605584), (40, 529886), (49, 432560), (56, 378490), (70, 302792), (80, 264943), (98, 216280), (112, 189245), (140, 151396), (196, 108140), (245, 86512), (280, 75698), (392, 54070), (490, 43256), (560, 37849), (784, 27035), (980, 21628), (1960, 10814), (3920, 5407)]