18917936

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:969

約数の個数: 40

約数和(自身を含む): 38759424

約数和(自身を除く): 19841488

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 887, 1333, 1774, 2666, 3548, 5332, 7096, 10664, 14192, 21328, 27497, 38141, 54994, 76282, 109988, 152564, 219976, 305128, 439952, 610256, 1182371, 2364742, 4729484, 9458968, 18917936]

約数ペア:

[(1, 18917936), (2, 9458968), (4, 4729484), (8, 2364742), (16, 1182371), (31, 610256), (43, 439952), (62, 305128), (86, 219976), (124, 152564), (172, 109988), (248, 76282), (344, 54994), (496, 38141), (688, 27497), (887, 21328), (1333, 14192), (1774, 10664), (2666, 7096), (3548, 5332)]