27991795

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 37844352

約数和(自身を除く): 9852557

約数列:

[1, 5, 13, 37, 65, 103, 113, 185, 481, 515, 565, 1339, 1469, 2405, 3811, 4181, 6695, 7345, 11639, 19055, 20905, 49543, 54353, 58195, 151307, 247715, 271765, 430643, 756535, 2153215, 5598359, 27991795]

約数ペア:

[(1, 27991795), (5, 5598359), (13, 2153215), (37, 756535), (65, 430643), (103, 271765), (113, 247715), (185, 151307), (481, 58195), (515, 54353), (565, 49543), (1339, 20905), (1469, 19055), (2405, 11639), (3811, 7345), (4181, 6695)]