87661720

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{8147}}^1$

素因数の和:8427

約数の個数: 32

約数和(自身を含む): 197996400

約数和(自身を除く): 110334680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 8147, 10760, 16294, 32588, 40735, 65176, 81470, 162940, 325880, 2191543, 4383086, 8766172, 10957715, 17532344, 21915430, 43830860, 87661720]

約数ペア:

[(1, 87661720), (2, 43830860), (4, 21915430), (5, 17532344), (8, 10957715), (10, 8766172), (20, 4383086), (40, 2191543), (269, 325880), (538, 162940), (1076, 81470), (1345, 65176), (2152, 40735), (2690, 32588), (5380, 16294), (8147, 10760)]