128140840

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{11909}}^1$

素因数の和:12189

約数の個数: 32

約数和(自身を含む): 289413000

約数和(自身を除く): 161272160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 10760, 11909, 23818, 47636, 59545, 95272, 119090, 238180, 476360, 3203521, 6407042, 12814084, 16017605, 25628168, 32035210, 64070420, 128140840]

約数ペア:

[(1, 128140840), (2, 64070420), (4, 32035210), (5, 25628168), (8, 16017605), (10, 12814084), (20, 6407042), (40, 3203521), (269, 476360), (538, 238180), (1076, 119090), (1345, 95272), (2152, 59545), (2690, 47636), (5380, 23818), (10760, 11909)]