20860000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{149}}^1$

素因数の和:186

約数の個数: 120

約数和(自身を含む): 59043600

約数和(自身を除く): 38183600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 149, 160, 175, 200, 224, 250, 280, 298, 350, 400, 500, 560, 596, 625, 700, 745, 800, 875, 1000, 1043, 1120, 1192, 1250, 1400, 1490, 1750, 2000, 2086, 2384, 2500, 2800, 2980, 3500, 3725, 4000, 4172, 4375, 4768, 5000, 5215, 5600, 5960, 7000, 7450, 8344, 8750, 10000, 10430, 11920, 14000, 14900, 16688, 17500, 18625, 20000, 20860, 23840, 26075, 28000, 29800, 33376, 35000, 37250, 41720, 52150, 59600, 70000, 74500, 83440, 93125, 104300, 119200, 130375, 140000, 149000, 166880, 186250, 208600, 260750, 298000, 372500, 417200, 521500, 596000, 651875, 745000, 834400, 1043000, 1303750, 1490000, 2086000, 2607500, 2980000, 4172000, 5215000, 10430000, 20860000]

約数ペア:

[(1, 20860000), (2, 10430000), (4, 5215000), (5, 4172000), (7, 2980000), (8, 2607500), (10, 2086000), (14, 1490000), (16, 1303750), (20, 1043000), (25, 834400), (28, 745000), (32, 651875), (35, 596000), (40, 521500), (50, 417200), (56, 372500), (70, 298000), (80, 260750), (100, 208600), (112, 186250), (125, 166880), (140, 149000), (149, 140000), (160, 130375), (175, 119200), (200, 104300), (224, 93125), (250, 83440), (280, 74500), (298, 70000), (350, 59600), (400, 52150), (500, 41720), (560, 37250), (596, 35000), (625, 33376), (700, 29800), (745, 28000), (800, 26075), (875, 23840), (1000, 20860), (1043, 20000), (1120, 18625), (1192, 17500), (1250, 16688), (1400, 14900), (1490, 14000), (1750, 11920), (2000, 10430), (2086, 10000), (2384, 8750), (2500, 8344), (2800, 7450), (2980, 7000), (3500, 5960), (3725, 5600), (4000, 5215), (4172, 5000), (4375, 4768)]