1389280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 3462480

約数和(自身を除く): 2073200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 457, 608, 760, 914, 1520, 1828, 2285, 3040, 3656, 4570, 7312, 8683, 9140, 14624, 17366, 18280, 34732, 36560, 43415, 69464, 73120, 86830, 138928, 173660, 277856, 347320, 694640, 1389280]

約数ペア:

[(1, 1389280), (2, 694640), (4, 347320), (5, 277856), (8, 173660), (10, 138928), (16, 86830), (19, 73120), (20, 69464), (32, 43415), (38, 36560), (40, 34732), (76, 18280), (80, 17366), (95, 14624), (152, 9140), (160, 8683), (190, 7312), (304, 4570), (380, 3656), (457, 3040), (608, 2285), (760, 1828), (914, 1520)]