19813712

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{929}}^1$

素因数の和:1011

約数の個数: 40

約数和(自身を含む): 40592640

約数和(自身を除く): 20778928

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 929, 1333, 1858, 2666, 3716, 5332, 7432, 10664, 14864, 21328, 28799, 39947, 57598, 79894, 115196, 159788, 230392, 319576, 460784, 639152, 1238357, 2476714, 4953428, 9906856, 19813712]

約数ペア:

[(1, 19813712), (2, 9906856), (4, 4953428), (8, 2476714), (16, 1238357), (31, 639152), (43, 460784), (62, 319576), (86, 230392), (124, 159788), (172, 115196), (248, 79894), (344, 57598), (496, 39947), (688, 28799), (929, 21328), (1333, 14864), (1858, 10664), (2666, 7432), (3716, 5332)]