81210020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{238853}}^1$

素因数の和:238879

約数の個数: 24

約数和(自身を含む): 180573624

約数和(自身を除く): 99363604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 238853, 477706, 955412, 1194265, 2388530, 4060501, 4777060, 8121002, 16242004, 20302505, 40605010, 81210020]

約数ペア:

[(1, 81210020), (2, 40605010), (4, 20302505), (5, 16242004), (10, 8121002), (17, 4777060), (20, 4060501), (34, 2388530), (68, 1194265), (85, 955412), (170, 477706), (340, 238853)]