1289680

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{47}}^1$

素因数の和:81

約数の個数: 80

約数和(自身を含む): 3571200

約数和(自身を除く): 2281520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 98, 112, 140, 188, 196, 235, 245, 280, 329, 343, 376, 392, 470, 490, 560, 658, 686, 752, 784, 940, 980, 1316, 1372, 1645, 1715, 1880, 1960, 2303, 2632, 2744, 3290, 3430, 3760, 3920, 4606, 5264, 5488, 6580, 6860, 9212, 11515, 13160, 13720, 16121, 18424, 23030, 26320, 27440, 32242, 36848, 46060, 64484, 80605, 92120, 128968, 161210, 184240, 257936, 322420, 644840, 1289680]

約数ペア:

[(1, 1289680), (2, 644840), (4, 322420), (5, 257936), (7, 184240), (8, 161210), (10, 128968), (14, 92120), (16, 80605), (20, 64484), (28, 46060), (35, 36848), (40, 32242), (47, 27440), (49, 26320), (56, 23030), (70, 18424), (80, 16121), (94, 13720), (98, 13160), (112, 11515), (140, 9212), (188, 6860), (196, 6580), (235, 5488), (245, 5264), (280, 4606), (329, 3920), (343, 3760), (376, 3430), (392, 3290), (470, 2744), (490, 2632), (560, 2303), (658, 1960), (686, 1880), (752, 1715), (784, 1645), (940, 1372), (980, 1316)]