21231496

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 47638080

約数和(自身を除く): 26406584

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 67, 88, 104, 134, 143, 268, 277, 286, 536, 554, 572, 737, 871, 1108, 1144, 1474, 1742, 2216, 2948, 3047, 3484, 3601, 5896, 6094, 6968, 7202, 9581, 12188, 14404, 18559, 19162, 24376, 28808, 37118, 38324, 39611, 74236, 76648, 79222, 148472, 158444, 204149, 241267, 316888, 408298, 482534, 816596, 965068, 1633192, 1930136, 2653937, 5307874, 10615748, 21231496]

約数ペア:

[(1, 21231496), (2, 10615748), (4, 5307874), (8, 2653937), (11, 1930136), (13, 1633192), (22, 965068), (26, 816596), (44, 482534), (52, 408298), (67, 316888), (88, 241267), (104, 204149), (134, 158444), (143, 148472), (268, 79222), (277, 76648), (286, 74236), (536, 39611), (554, 38324), (572, 37118), (737, 28808), (871, 24376), (1108, 19162), (1144, 18559), (1474, 14404), (1742, 12188), (2216, 9581), (2948, 7202), (3047, 6968), (3484, 6094), (3601, 5896)]