81554840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107309}}^1$

素因数の和:107339

約数の個数: 32

約数和(自身を含む): 193158000

約数和(自身を除く): 111603160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 107309, 214618, 429236, 536545, 858472, 1073090, 2038871, 2146180, 4077742, 4292360, 8155484, 10194355, 16310968, 20388710, 40777420, 81554840]

約数ペア:

[(1, 81554840), (2, 40777420), (4, 20388710), (5, 16310968), (8, 10194355), (10, 8155484), (19, 4292360), (20, 4077742), (38, 2146180), (40, 2038871), (76, 1073090), (95, 858472), (152, 536545), (190, 429236), (380, 214618), (760, 107309)]