84640000

素因数分解:

$2^8\times 5^4\times {\mathrm{23}}^2$

素因数の和:82

約数の個数: 135

約数和(自身を含む): 220697323

約数和(自身を除く): 136057323

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 125, 128, 160, 184, 200, 230, 250, 256, 320, 368, 400, 460, 500, 529, 575, 625, 640, 736, 800, 920, 1000, 1058, 1150, 1250, 1280, 1472, 1600, 1840, 2000, 2116, 2300, 2500, 2645, 2875, 2944, 3200, 3680, 4000, 4232, 4600, 5000, 5290, 5750, 5888, 6400, 7360, 8000, 8464, 9200, 10000, 10580, 11500, 13225, 14375, 14720, 16000, 16928, 18400, 20000, 21160, 23000, 26450, 28750, 29440, 32000, 33856, 36800, 40000, 42320, 46000, 52900, 57500, 66125, 67712, 73600, 80000, 84640, 92000, 105800, 115000, 132250, 135424, 147200, 160000, 169280, 184000, 211600, 230000, 264500, 330625, 338560, 368000, 423200, 460000, 529000, 661250, 677120, 736000, 846400, 920000, 1058000, 1322500, 1692800, 1840000, 2116000, 2645000, 3385600, 3680000, 4232000, 5290000, 8464000, 10580000, 16928000, 21160000, 42320000, 84640000]

約数ペア:

[(1, 84640000), (2, 42320000), (4, 21160000), (5, 16928000), (8, 10580000), (10, 8464000), (16, 5290000), (20, 4232000), (23, 3680000), (25, 3385600), (32, 2645000), (40, 2116000), (46, 1840000), (50, 1692800), (64, 1322500), (80, 1058000), (92, 920000), (100, 846400), (115, 736000), (125, 677120), (128, 661250), (160, 529000), (184, 460000), (200, 423200), (230, 368000), (250, 338560), (256, 330625), (320, 264500), (368, 230000), (400, 211600), (460, 184000), (500, 169280), (529, 160000), (575, 147200), (625, 135424), (640, 132250), (736, 115000), (800, 105800), (920, 92000), (1000, 84640), (1058, 80000), (1150, 73600), (1250, 67712), (1280, 66125), (1472, 57500), (1600, 52900), (1840, 46000), (2000, 42320), (2116, 40000), (2300, 36800), (2500, 33856), (2645, 32000), (2875, 29440), (2944, 28750), (3200, 26450), (3680, 23000), (4000, 21160), (4232, 20000), (4600, 18400), (5000, 16928), (5290, 16000), (5750, 14720), (5888, 14375), (6400, 13225), (7360, 11500), (8000, 10580), (8464, 10000)]