81959680

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5821}}^1$

素因数の和:5853

約数の個数: 72

約数和(自身を含む): 214203024

約数和(自身を除く): 132243344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1760, 2816, 3520, 5821, 7040, 11642, 14080, 23284, 29105, 46568, 58210, 64031, 93136, 116420, 128062, 186272, 232840, 256124, 320155, 372544, 465680, 512248, 640310, 745088, 931360, 1024496, 1280620, 1490176, 1862720, 2048992, 2561240, 3725440, 4097984, 5122480, 7450880, 8195968, 10244960, 16391936, 20489920, 40979840, 81959680]

約数ペア:

[(1, 81959680), (2, 40979840), (4, 20489920), (5, 16391936), (8, 10244960), (10, 8195968), (11, 7450880), (16, 5122480), (20, 4097984), (22, 3725440), (32, 2561240), (40, 2048992), (44, 1862720), (55, 1490176), (64, 1280620), (80, 1024496), (88, 931360), (110, 745088), (128, 640310), (160, 512248), (176, 465680), (220, 372544), (256, 320155), (320, 256124), (352, 232840), (440, 186272), (640, 128062), (704, 116420), (880, 93136), (1280, 64031), (1408, 58210), (1760, 46568), (2816, 29105), (3520, 23284), (5821, 14080), (7040, 11642)]