21815648

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:759

約数の個数: 48

約数和(自身を含む): 46131120

約数和(自身を除く): 24315472

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 76, 106, 152, 212, 304, 424, 608, 677, 848, 1007, 1354, 1696, 2014, 2708, 4028, 5416, 8056, 10832, 12863, 16112, 21664, 25726, 32224, 35881, 51452, 71762, 102904, 143524, 205808, 287048, 411616, 574096, 681739, 1148192, 1363478, 2726956, 5453912, 10907824, 21815648]

約数ペア:

[(1, 21815648), (2, 10907824), (4, 5453912), (8, 2726956), (16, 1363478), (19, 1148192), (32, 681739), (38, 574096), (53, 411616), (76, 287048), (106, 205808), (152, 143524), (212, 102904), (304, 71762), (424, 51452), (608, 35881), (677, 32224), (848, 25726), (1007, 21664), (1354, 16112), (1696, 12863), (2014, 10832), (2708, 8056), (4028, 5416)]