164974180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{2371}}^1$

素因数の和:2465

約数の個数: 72

約数和(自身を含む): 408856896

約数和(自身を除く): 243882716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1988, 2371, 2485, 3479, 4742, 4970, 6958, 9484, 9940, 11855, 13916, 16597, 17395, 23710, 33194, 34790, 47420, 66388, 69580, 82985, 116179, 165970, 168341, 232358, 331940, 336682, 464716, 580895, 673364, 841705, 1161790, 1178387, 1683410, 2323580, 2356774, 3366820, 4713548, 5891935, 8248709, 11783870, 16497418, 23567740, 32994836, 41243545, 82487090, 164974180]

約数ペア:

[(1, 164974180), (2, 82487090), (4, 41243545), (5, 32994836), (7, 23567740), (10, 16497418), (14, 11783870), (20, 8248709), (28, 5891935), (35, 4713548), (49, 3366820), (70, 2356774), (71, 2323580), (98, 1683410), (140, 1178387), (142, 1161790), (196, 841705), (245, 673364), (284, 580895), (355, 464716), (490, 336682), (497, 331940), (710, 232358), (980, 168341), (994, 165970), (1420, 116179), (1988, 82985), (2371, 69580), (2485, 66388), (3479, 47420), (4742, 34790), (4970, 33194), (6958, 23710), (9484, 17395), (9940, 16597), (11855, 13916)]