21896840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78203}}^1$

素因数の和:78221

約数の個数: 32

約数和(自身を含む): 56306880

約数和(自身を除く): 34410040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78203, 156406, 312812, 391015, 547421, 625624, 782030, 1094842, 1564060, 2189684, 2737105, 3128120, 4379368, 5474210, 10948420, 21896840]

約数ペア:

[(1, 21896840), (2, 10948420), (4, 5474210), (5, 4379368), (7, 3128120), (8, 2737105), (10, 2189684), (14, 1564060), (20, 1094842), (28, 782030), (35, 625624), (40, 547421), (56, 391015), (70, 312812), (140, 156406), (280, 78203)]