20388615

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5503}}^1$

素因数の和:5543

約数の個数: 32

約数和(自身を含む): 36986880

約数和(自身を除く): 16598265

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 195, 247, 285, 741, 1235, 3705, 5503, 16509, 27515, 71539, 82545, 104557, 214617, 313671, 357695, 522785, 1073085, 1359241, 1568355, 4077723, 6796205, 20388615]

約数ペア:

[(1, 20388615), (3, 6796205), (5, 4077723), (13, 1568355), (15, 1359241), (19, 1073085), (39, 522785), (57, 357695), (65, 313671), (95, 214617), (195, 104557), (247, 82545), (285, 71539), (741, 27515), (1235, 16509), (3705, 5503)]