81235040

素因数分解:

$2^5\times 5^1\times {\mathrm{507719}}^1$

素因数の和:507734

約数の個数: 24

約数和(自身を含む): 191918160

約数和(自身を除く): 110683120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 507719, 1015438, 2030876, 2538595, 4061752, 5077190, 8123504, 10154380, 16247008, 20308760, 40617520, 81235040]

約数ペア:

[(1, 81235040), (2, 40617520), (4, 20308760), (5, 16247008), (8, 10154380), (10, 8123504), (16, 5077190), (20, 4061752), (32, 2538595), (40, 2030876), (80, 1015438), (160, 507719)]