78688000

素因数分解:

$2^8\times 5^3\times {\mathrm{2459}}^1$

素因数の和:2490

約数の個数: 72

約数和(自身を含む): 196101360

約数和(自身を除く): 117413360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 800, 1000, 1280, 1600, 2000, 2459, 3200, 4000, 4918, 6400, 8000, 9836, 12295, 16000, 19672, 24590, 32000, 39344, 49180, 61475, 78688, 98360, 122950, 157376, 196720, 245900, 307375, 314752, 393440, 491800, 614750, 629504, 786880, 983600, 1229500, 1573760, 1967200, 2459000, 3147520, 3934400, 4918000, 7868800, 9836000, 15737600, 19672000, 39344000, 78688000]

約数ペア:

[(1, 78688000), (2, 39344000), (4, 19672000), (5, 15737600), (8, 9836000), (10, 7868800), (16, 4918000), (20, 3934400), (25, 3147520), (32, 2459000), (40, 1967200), (50, 1573760), (64, 1229500), (80, 983600), (100, 786880), (125, 629504), (128, 614750), (160, 491800), (200, 393440), (250, 314752), (256, 307375), (320, 245900), (400, 196720), (500, 157376), (640, 122950), (800, 98360), (1000, 78688), (1280, 61475), (1600, 49180), (2000, 39344), (2459, 32000), (3200, 24590), (4000, 19672), (4918, 16000), (6400, 12295), (8000, 9836)]