21404530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{17987}}^1$

素因数の和:18018

約数の個数: 32

約数和(自身を含む): 46624896

約数和(自身を除く): 25220366

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 595, 1190, 17987, 35974, 89935, 125909, 179870, 251818, 305779, 611558, 629545, 1259090, 1528895, 2140453, 3057790, 4280906, 10702265, 21404530]

約数ペア:

[(1, 21404530), (2, 10702265), (5, 4280906), (7, 3057790), (10, 2140453), (14, 1528895), (17, 1259090), (34, 629545), (35, 611558), (70, 305779), (85, 251818), (119, 179870), (170, 125909), (238, 89935), (595, 35974), (1190, 17987)]