77977720

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{7247}}^1$

素因数の和:7527

約数の個数: 32

約数和(自身を含む): 176126400

約数和(自身を除く): 98148680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 7247, 10760, 14494, 28988, 36235, 57976, 72470, 144940, 289880, 1949443, 3898886, 7797772, 9747215, 15595544, 19494430, 38988860, 77977720]

約数ペア:

[(1, 77977720), (2, 38988860), (4, 19494430), (5, 15595544), (8, 9747215), (10, 7797772), (20, 3898886), (40, 1949443), (269, 289880), (538, 144940), (1076, 72470), (1345, 57976), (2152, 36235), (2690, 28988), (5380, 14494), (7247, 10760)]