19978624

素因数分解:

$2^7\times {\mathrm{127}}^1\times {\mathrm{1229}}^1$

素因数の和:1370

約数の個数: 32

約数和(自身を含む): 40147200

約数和(自身を除く): 20168576

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 128, 254, 508, 1016, 1229, 2032, 2458, 4064, 4916, 8128, 9832, 16256, 19664, 39328, 78656, 156083, 157312, 312166, 624332, 1248664, 2497328, 4994656, 9989312, 19978624]

約数ペア:

[(1, 19978624), (2, 9989312), (4, 4994656), (8, 2497328), (16, 1248664), (32, 624332), (64, 312166), (127, 157312), (128, 156083), (254, 78656), (508, 39328), (1016, 19664), (1229, 16256), (2032, 9832), (2458, 8128), (4064, 4916)]