20859000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 128

約数和(自身を含む): 69076800

約数和(自身を除く): 48217800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 25, 30, 34, 40, 50, 51, 60, 68, 75, 85, 100, 102, 120, 125, 136, 150, 170, 200, 204, 250, 255, 300, 340, 375, 408, 409, 425, 500, 510, 600, 680, 750, 818, 850, 1000, 1020, 1227, 1275, 1500, 1636, 1700, 2040, 2045, 2125, 2454, 2550, 3000, 3272, 3400, 4090, 4250, 4908, 5100, 6135, 6375, 6953, 8180, 8500, 9816, 10200, 10225, 12270, 12750, 13906, 16360, 17000, 20450, 20859, 24540, 25500, 27812, 30675, 34765, 40900, 41718, 49080, 51000, 51125, 55624, 61350, 69530, 81800, 83436, 102250, 104295, 122700, 139060, 153375, 166872, 173825, 204500, 208590, 245400, 278120, 306750, 347650, 409000, 417180, 521475, 613500, 695300, 834360, 869125, 1042950, 1227000, 1390600, 1738250, 2085900, 2607375, 3476500, 4171800, 5214750, 6953000, 10429500, 20859000]

約数ペア:

[(1, 20859000), (2, 10429500), (3, 6953000), (4, 5214750), (5, 4171800), (6, 3476500), (8, 2607375), (10, 2085900), (12, 1738250), (15, 1390600), (17, 1227000), (20, 1042950), (24, 869125), (25, 834360), (30, 695300), (34, 613500), (40, 521475), (50, 417180), (51, 409000), (60, 347650), (68, 306750), (75, 278120), (85, 245400), (100, 208590), (102, 204500), (120, 173825), (125, 166872), (136, 153375), (150, 139060), (170, 122700), (200, 104295), (204, 102250), (250, 83436), (255, 81800), (300, 69530), (340, 61350), (375, 55624), (408, 51125), (409, 51000), (425, 49080), (500, 41718), (510, 40900), (600, 34765), (680, 30675), (750, 27812), (818, 25500), (850, 24540), (1000, 20859), (1020, 20450), (1227, 17000), (1275, 16360), (1500, 13906), (1636, 12750), (1700, 12270), (2040, 10225), (2045, 10200), (2125, 9816), (2454, 8500), (2550, 8180), (3000, 6953), (3272, 6375), (3400, 6135), (4090, 5100), (4250, 4908)]