21807632

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:628

約数の個数: 80

約数和(自身を含む): 54472704

約数和(自身を除く): 32665072

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 44, 56, 62, 77, 88, 112, 124, 154, 176, 217, 248, 308, 341, 434, 496, 571, 616, 682, 868, 1142, 1232, 1364, 1736, 2284, 2387, 2728, 3472, 3997, 4568, 4774, 5456, 6281, 7994, 9136, 9548, 12562, 15988, 17701, 19096, 25124, 31976, 35402, 38192, 43967, 50248, 63952, 70804, 87934, 100496, 123907, 141608, 175868, 194711, 247814, 283216, 351736, 389422, 495628, 703472, 778844, 991256, 1362977, 1557688, 1982512, 2725954, 3115376, 5451908, 10903816, 21807632]

約数ペア:

[(1, 21807632), (2, 10903816), (4, 5451908), (7, 3115376), (8, 2725954), (11, 1982512), (14, 1557688), (16, 1362977), (22, 991256), (28, 778844), (31, 703472), (44, 495628), (56, 389422), (62, 351736), (77, 283216), (88, 247814), (112, 194711), (124, 175868), (154, 141608), (176, 123907), (217, 100496), (248, 87934), (308, 70804), (341, 63952), (434, 50248), (496, 43967), (571, 38192), (616, 35402), (682, 31976), (868, 25124), (1142, 19096), (1232, 17701), (1364, 15988), (1736, 12562), (2284, 9548), (2387, 9136), (2728, 7994), (3472, 6281), (3997, 5456), (4568, 4774)]