4019980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 36

約数和(自身を含む): 8779680

約数和(自身を除く): 4759700

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 239, 290, 478, 580, 841, 956, 1195, 1682, 2390, 3364, 4205, 4780, 6931, 8410, 13862, 16820, 27724, 34655, 69310, 138620, 200999, 401998, 803996, 1004995, 2009990, 4019980]

約数ペア:

[(1, 4019980), (2, 2009990), (4, 1004995), (5, 803996), (10, 401998), (20, 200999), (29, 138620), (58, 69310), (116, 34655), (145, 27724), (239, 16820), (290, 13862), (478, 8410), (580, 6931), (841, 4780), (956, 4205), (1195, 3364), (1682, 2390)]