81310400

素因数分解:

$2^6\times 5^2\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:682

約数の個数: 84

約数和(自身を含む): 202676760

約数和(自身を除く): 121366360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 89, 100, 160, 178, 200, 320, 356, 400, 445, 571, 712, 800, 890, 1142, 1424, 1600, 1780, 2225, 2284, 2848, 2855, 3560, 4450, 4568, 5696, 5710, 7120, 8900, 9136, 11420, 14240, 14275, 17800, 18272, 22840, 28480, 28550, 35600, 36544, 45680, 50819, 57100, 71200, 91360, 101638, 114200, 142400, 182720, 203276, 228400, 254095, 406552, 456800, 508190, 813104, 913600, 1016380, 1270475, 1626208, 2032760, 2540950, 3252416, 4065520, 5081900, 8131040, 10163800, 16262080, 20327600, 40655200, 81310400]

約数ペア:

[(1, 81310400), (2, 40655200), (4, 20327600), (5, 16262080), (8, 10163800), (10, 8131040), (16, 5081900), (20, 4065520), (25, 3252416), (32, 2540950), (40, 2032760), (50, 1626208), (64, 1270475), (80, 1016380), (89, 913600), (100, 813104), (160, 508190), (178, 456800), (200, 406552), (320, 254095), (356, 228400), (400, 203276), (445, 182720), (571, 142400), (712, 114200), (800, 101638), (890, 91360), (1142, 71200), (1424, 57100), (1600, 50819), (1780, 45680), (2225, 36544), (2284, 35600), (2848, 28550), (2855, 28480), (3560, 22840), (4450, 18272), (4568, 17800), (5696, 14275), (5710, 14240), (7120, 11420), (8900, 9136)]