81826880

素因数分解:

$2^6\times 5^1\times {\mathrm{255709}}^1$

素因数の和:255726

約数の個数: 28

約数和(自身を含む): 194851020

約数和(自身を除く): 113024140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 255709, 511418, 1022836, 1278545, 2045672, 2557090, 4091344, 5114180, 8182688, 10228360, 16365376, 20456720, 40913440, 81826880]

約数ペア:

[(1, 81826880), (2, 40913440), (4, 20456720), (5, 16365376), (8, 10228360), (10, 8182688), (16, 5114180), (20, 4091344), (32, 2557090), (40, 2045672), (64, 1278545), (80, 1022836), (160, 511418), (320, 255709)]