19805565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2161}}^1$

素因数の和:2229

約数の個数: 32

約数和(自身を含む): 34868736

約数和(自身を除く): 15063171

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2161, 3055, 6483, 9165, 10805, 28093, 32415, 84279, 101567, 140465, 304701, 421395, 507835, 1320371, 1523505, 3961113, 6601855, 19805565]

約数ペア:

[(1, 19805565), (3, 6601855), (5, 3961113), (13, 1523505), (15, 1320371), (39, 507835), (47, 421395), (65, 304701), (141, 140465), (195, 101567), (235, 84279), (611, 32415), (705, 28093), (1833, 10805), (2161, 9165), (3055, 6483)]