81951200

素因数分解:

$2^5\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1151}}^1$

素因数の和:1260

約数の個数: 72

約数和(自身を含む): 202487040

約数和(自身を除く): 120535840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 89, 100, 160, 178, 200, 356, 400, 445, 712, 800, 890, 1151, 1424, 1780, 2225, 2302, 2848, 3560, 4450, 4604, 5755, 7120, 8900, 9208, 11510, 14240, 17800, 18416, 23020, 28775, 35600, 36832, 46040, 57550, 71200, 92080, 102439, 115100, 184160, 204878, 230200, 409756, 460400, 512195, 819512, 920800, 1024390, 1639024, 2048780, 2560975, 3278048, 4097560, 5121950, 8195120, 10243900, 16390240, 20487800, 40975600, 81951200]

約数ペア:

[(1, 81951200), (2, 40975600), (4, 20487800), (5, 16390240), (8, 10243900), (10, 8195120), (16, 5121950), (20, 4097560), (25, 3278048), (32, 2560975), (40, 2048780), (50, 1639024), (80, 1024390), (89, 920800), (100, 819512), (160, 512195), (178, 460400), (200, 409756), (356, 230200), (400, 204878), (445, 184160), (712, 115100), (800, 102439), (890, 92080), (1151, 71200), (1424, 57550), (1780, 46040), (2225, 36832), (2302, 35600), (2848, 28775), (3560, 23020), (4450, 18416), (4604, 17800), (5755, 14240), (7120, 11510), (8900, 9208)]