19915005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{881}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 35054208

約数和(自身を除く): 15139203

約数列:

[1, 3, 5, 11, 15, 33, 55, 137, 165, 411, 685, 881, 1507, 2055, 2643, 4405, 4521, 7535, 9691, 13215, 22605, 29073, 48455, 120697, 145365, 362091, 603485, 1327667, 1810455, 3983001, 6638335, 19915005]

約数ペア:

[(1, 19915005), (3, 6638335), (5, 3983001), (11, 1810455), (15, 1327667), (33, 603485), (55, 362091), (137, 145365), (165, 120697), (411, 48455), (685, 29073), (881, 22605), (1507, 13215), (2055, 9691), (2643, 7535), (4405, 4521)]