21179152

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:343

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21005648

約数列:

[1, 2, 4, 8, 16, 89, 107, 139, 178, 214, 278, 356, 428, 556, 712, 856, 1112, 1424, 1712, 2224, 9523, 12371, 14873, 19046, 24742, 29746, 38092, 49484, 59492, 76184, 98968, 118984, 152368, 197936, 237968, 1323697, 2647394, 5294788, 10589576, 21179152]

約数ペア:

[(1, 21179152), (2, 10589576), (4, 5294788), (8, 2647394), (16, 1323697), (89, 237968), (107, 197936), (139, 152368), (178, 118984), (214, 98968), (278, 76184), (356, 59492), (428, 49484), (556, 38092), (712, 29746), (856, 24742), (1112, 19046), (1424, 14873), (1712, 12371), (2224, 9523)]