1279719

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 40

約数和(自身を含む): 2280608

約数和(自身を除く): 1000889

約数列:

[1, 3, 7, 9, 21, 27, 37, 61, 63, 81, 111, 183, 189, 259, 333, 427, 549, 567, 777, 999, 1281, 1647, 2257, 2331, 2997, 3843, 4941, 6771, 6993, 11529, 15799, 20313, 20979, 34587, 47397, 60939, 142191, 182817, 426573, 1279719]

約数ペア:

[(1, 1279719), (3, 426573), (7, 182817), (9, 142191), (21, 60939), (27, 47397), (37, 34587), (61, 20979), (63, 20313), (81, 15799), (111, 11529), (183, 6993), (189, 6771), (259, 4941), (333, 3843), (427, 2997), (549, 2331), (567, 2257), (777, 1647), (999, 1281)]