21221816

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{733}}^1$

素因数の和:804

約数の個数: 64

約数和(自身を含む): 50734080

約数和(自身を除く): 29512264

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 47, 56, 77, 88, 94, 154, 188, 308, 329, 376, 517, 616, 658, 733, 1034, 1316, 1466, 2068, 2632, 2932, 3619, 4136, 5131, 5864, 7238, 8063, 10262, 14476, 16126, 20524, 28952, 32252, 34451, 41048, 56441, 64504, 68902, 112882, 137804, 225764, 241157, 275608, 378961, 451528, 482314, 757922, 964628, 1515844, 1929256, 2652727, 3031688, 5305454, 10610908, 21221816]

約数ペア:

[(1, 21221816), (2, 10610908), (4, 5305454), (7, 3031688), (8, 2652727), (11, 1929256), (14, 1515844), (22, 964628), (28, 757922), (44, 482314), (47, 451528), (56, 378961), (77, 275608), (88, 241157), (94, 225764), (154, 137804), (188, 112882), (308, 68902), (329, 64504), (376, 56441), (517, 41048), (616, 34451), (658, 32252), (733, 28952), (1034, 20524), (1316, 16126), (1466, 14476), (2068, 10262), (2632, 8063), (2932, 7238), (3619, 5864), (4136, 5131)]