20768636

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 43610112

約数和(自身を除く): 22841476

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 71, 124, 142, 217, 284, 337, 434, 497, 674, 868, 994, 1348, 1988, 2201, 2359, 4402, 4718, 8804, 9436, 10447, 15407, 20894, 23927, 30814, 41788, 47854, 61628, 73129, 95708, 146258, 167489, 292516, 334978, 669956, 741737, 1483474, 2966948, 5192159, 10384318, 20768636]

約数ペア:

[(1, 20768636), (2, 10384318), (4, 5192159), (7, 2966948), (14, 1483474), (28, 741737), (31, 669956), (62, 334978), (71, 292516), (124, 167489), (142, 146258), (217, 95708), (284, 73129), (337, 61628), (434, 47854), (497, 41788), (674, 30814), (868, 23927), (994, 20894), (1348, 15407), (1988, 10447), (2201, 9436), (2359, 8804), (4402, 4718)]