20012900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 46038720

約数和(自身を除く): 26025820

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 67, 100, 103, 116, 134, 145, 206, 268, 290, 335, 412, 515, 580, 670, 725, 1030, 1340, 1450, 1675, 1943, 2060, 2575, 2900, 2987, 3350, 3886, 5150, 5974, 6700, 6901, 7772, 9715, 10300, 11948, 13802, 14935, 19430, 27604, 29870, 34505, 38860, 48575, 59740, 69010, 74675, 97150, 138020, 149350, 172525, 194300, 200129, 298700, 345050, 400258, 690100, 800516, 1000645, 2001290, 4002580, 5003225, 10006450, 20012900]

約数ペア:

[(1, 20012900), (2, 10006450), (4, 5003225), (5, 4002580), (10, 2001290), (20, 1000645), (25, 800516), (29, 690100), (50, 400258), (58, 345050), (67, 298700), (100, 200129), (103, 194300), (116, 172525), (134, 149350), (145, 138020), (206, 97150), (268, 74675), (290, 69010), (335, 59740), (412, 48575), (515, 38860), (580, 34505), (670, 29870), (725, 27604), (1030, 19430), (1340, 14935), (1450, 13802), (1675, 11948), (1943, 10300), (2060, 9715), (2575, 7772), (2900, 6901), (2987, 6700), (3350, 5974), (3886, 5150)]