21403480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76441}}^1$

素因数の和:76459

約数の個数: 32

約数和(自身を含む): 55038240

約数和(自身を除く): 33634760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76441, 152882, 305764, 382205, 535087, 611528, 764410, 1070174, 1528820, 2140348, 2675435, 3057640, 4280696, 5350870, 10701740, 21403480]

約数ペア:

[(1, 21403480), (2, 10701740), (4, 5350870), (5, 4280696), (7, 3057640), (8, 2675435), (10, 2140348), (14, 1528820), (20, 1070174), (28, 764410), (35, 611528), (40, 535087), (56, 382205), (70, 305764), (140, 152882), (280, 76441)]