20712972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 58834944

約数和(自身を除く): 38121972

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 69, 71, 84, 92, 138, 142, 151, 161, 213, 276, 284, 302, 322, 426, 453, 483, 497, 604, 644, 852, 906, 966, 994, 1057, 1491, 1633, 1812, 1932, 1988, 2114, 2982, 3171, 3266, 3473, 4228, 4899, 5964, 6342, 6532, 6946, 9798, 10419, 10721, 11431, 12684, 13892, 19596, 20838, 21442, 22862, 24311, 32163, 34293, 41676, 42884, 45724, 48622, 64326, 68586, 72933, 75047, 97244, 128652, 137172, 145866, 150094, 225141, 246583, 291732, 300188, 450282, 493166, 739749, 900564, 986332, 1479498, 1726081, 2958996, 3452162, 5178243, 6904324, 10356486, 20712972]

約数ペア:

[(1, 20712972), (2, 10356486), (3, 6904324), (4, 5178243), (6, 3452162), (7, 2958996), (12, 1726081), (14, 1479498), (21, 986332), (23, 900564), (28, 739749), (42, 493166), (46, 450282), (69, 300188), (71, 291732), (84, 246583), (92, 225141), (138, 150094), (142, 145866), (151, 137172), (161, 128652), (213, 97244), (276, 75047), (284, 72933), (302, 68586), (322, 64326), (426, 48622), (453, 45724), (483, 42884), (497, 41676), (604, 34293), (644, 32163), (852, 24311), (906, 22862), (966, 21442), (994, 20838), (1057, 19596), (1491, 13892), (1633, 12684), (1812, 11431), (1932, 10721), (1988, 10419), (2114, 9798), (2982, 6946), (3171, 6532), (3266, 6342), (3473, 5964), (4228, 4899)]