18051995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 7107685

約数列:

[1, 5, 13, 19, 47, 65, 95, 235, 247, 311, 611, 893, 1235, 1555, 3055, 4043, 4465, 5909, 11609, 14617, 20215, 29545, 58045, 73085, 76817, 190021, 277723, 384085, 950105, 1388615, 3610399, 18051995]

約数ペア:

[(1, 18051995), (5, 3610399), (13, 1388615), (19, 950105), (47, 384085), (65, 277723), (95, 190021), (235, 76817), (247, 73085), (311, 58045), (611, 29545), (893, 20215), (1235, 14617), (1555, 11609), (3055, 5909), (4043, 4465)]