21898415

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2473}}^1$

素因数の和:2519

約数の個数: 32

約数和(自身を含む): 34200576

約数和(自身を除く): 12302161

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 2473, 8855, 12365, 17311, 27203, 56879, 86555, 136015, 190421, 284395, 398153, 625669, 952105, 1990765, 3128345, 4379683, 21898415]

約数ペア:

[(1, 21898415), (5, 4379683), (7, 3128345), (11, 1990765), (23, 952105), (35, 625669), (55, 398153), (77, 284395), (115, 190421), (161, 136015), (253, 86555), (385, 56879), (805, 27203), (1265, 17311), (1771, 12365), (2473, 8855)]