20889486

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 46887984

約数和(自身を除く): 25998498

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 137, 197, 258, 274, 387, 394, 411, 591, 774, 822, 1182, 1233, 1773, 2466, 3546, 5891, 8471, 11782, 16942, 17673, 25413, 26989, 35346, 50826, 53019, 53978, 76239, 80967, 106038, 152478, 161934, 242901, 485802, 1160527, 2321054, 3481581, 6963162, 10444743, 20889486]

約数ペア:

[(1, 20889486), (2, 10444743), (3, 6963162), (6, 3481581), (9, 2321054), (18, 1160527), (43, 485802), (86, 242901), (129, 161934), (137, 152478), (197, 106038), (258, 80967), (274, 76239), (387, 53978), (394, 53019), (411, 50826), (591, 35346), (774, 26989), (822, 25413), (1182, 17673), (1233, 16942), (1773, 11782), (2466, 8471), (3546, 5891)]