81315976

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^2\times {\mathrm{1511}}^1$

素因数の和:1586

約数の個数: 48

約数和(自身を含む): 180169920

約数和(自身を除く): 98853944

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 961, 1511, 1736, 1922, 3022, 3844, 6044, 6727, 7688, 10577, 12088, 13454, 21154, 26908, 42308, 46841, 53816, 84616, 93682, 187364, 327887, 374728, 655774, 1311548, 1452071, 2623096, 2904142, 5808284, 10164497, 11616568, 20328994, 40657988, 81315976]

約数ペア:

[(1, 81315976), (2, 40657988), (4, 20328994), (7, 11616568), (8, 10164497), (14, 5808284), (28, 2904142), (31, 2623096), (56, 1452071), (62, 1311548), (124, 655774), (217, 374728), (248, 327887), (434, 187364), (868, 93682), (961, 84616), (1511, 53816), (1736, 46841), (1922, 42308), (3022, 26908), (3844, 21154), (6044, 13454), (6727, 12088), (7688, 10577)]