20658976

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{937}}^1$

素因数の和:1013

約数の個数: 48

約数和(自身を含む): 44675064

約数和(自身を除く): 24016088

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 104, 106, 208, 212, 416, 424, 689, 848, 937, 1378, 1696, 1874, 2756, 3748, 5512, 7496, 11024, 12181, 14992, 22048, 24362, 29984, 48724, 49661, 97448, 99322, 194896, 198644, 389792, 397288, 645593, 794576, 1291186, 1589152, 2582372, 5164744, 10329488, 20658976]

約数ペア:

[(1, 20658976), (2, 10329488), (4, 5164744), (8, 2582372), (13, 1589152), (16, 1291186), (26, 794576), (32, 645593), (52, 397288), (53, 389792), (104, 198644), (106, 194896), (208, 99322), (212, 97448), (416, 49661), (424, 48724), (689, 29984), (848, 24362), (937, 22048), (1378, 14992), (1696, 12181), (1874, 11024), (2756, 7496), (3748, 5512)]