19704165

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2731}}^1$

素因数の和:2789

約数の個数: 32

約数和(自身を含む): 34882176

約数和(自身を除く): 15178011

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2731, 7215, 8193, 13655, 35503, 40965, 101047, 106509, 177515, 303141, 505235, 532545, 1313611, 1515705, 3940833, 6568055, 19704165]

約数ペア:

[(1, 19704165), (3, 6568055), (5, 3940833), (13, 1515705), (15, 1313611), (37, 532545), (39, 505235), (65, 303141), (111, 177515), (185, 106509), (195, 101047), (481, 40965), (555, 35503), (1443, 13655), (2405, 8193), (2731, 7215)]