12785740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 29665440

約数和(自身を除く): 16879700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 653, 890, 979, 1306, 1780, 1958, 2612, 3265, 3916, 4895, 6530, 7183, 9790, 13060, 14366, 19580, 28732, 35915, 58117, 71830, 116234, 143660, 232468, 290585, 581170, 639287, 1162340, 1278574, 2557148, 3196435, 6392870, 12785740]

約数ペア:

[(1, 12785740), (2, 6392870), (4, 3196435), (5, 2557148), (10, 1278574), (11, 1162340), (20, 639287), (22, 581170), (44, 290585), (55, 232468), (89, 143660), (110, 116234), (178, 71830), (220, 58117), (356, 35915), (445, 28732), (653, 19580), (890, 14366), (979, 13060), (1306, 9790), (1780, 7183), (1958, 6530), (2612, 4895), (3265, 3916)]