21605792

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{311}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 24625120

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 167, 208, 311, 334, 416, 622, 668, 1244, 1336, 2171, 2488, 2672, 4043, 4342, 4976, 5344, 8086, 8684, 9952, 16172, 17368, 32344, 34736, 51937, 64688, 69472, 103874, 129376, 207748, 415496, 675181, 830992, 1350362, 1661984, 2700724, 5401448, 10802896, 21605792]

約数ペア:

[(1, 21605792), (2, 10802896), (4, 5401448), (8, 2700724), (13, 1661984), (16, 1350362), (26, 830992), (32, 675181), (52, 415496), (104, 207748), (167, 129376), (208, 103874), (311, 69472), (334, 64688), (416, 51937), (622, 34736), (668, 32344), (1244, 17368), (1336, 16172), (2171, 9952), (2488, 8684), (2672, 8086), (4043, 5344), (4342, 4976)]