81474160

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11443}}^1$

素因数の和:11545

約数の個数: 40

約数和(自身を含む): 191572560

約数和(自身を除く): 110098400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 11443, 22886, 45772, 57215, 91544, 114430, 183088, 228860, 457720, 915440, 1018427, 2036854, 4073708, 5092135, 8147416, 10184270, 16294832, 20368540, 40737080, 81474160]

約数ペア:

[(1, 81474160), (2, 40737080), (4, 20368540), (5, 16294832), (8, 10184270), (10, 8147416), (16, 5092135), (20, 4073708), (40, 2036854), (80, 1018427), (89, 915440), (178, 457720), (356, 228860), (445, 183088), (712, 114430), (890, 91544), (1424, 57215), (1780, 45772), (3560, 22886), (7120, 11443)]