640730880

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{55619}}^1$

素因数の和:55646

約数の個数: 108

約数和(自身を含む): 2216901960

約数和(自身を除く): 1576171080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1920, 2304, 2880, 3840, 5760, 11520, 55619, 111238, 166857, 222476, 278095, 333714, 444952, 500571, 556190, 667428, 834285, 889904, 1001142, 1112380, 1334856, 1668570, 1779808, 2002284, 2224760, 2502855, 2669712, 3337140, 3559616, 4004568, 4449520, 5005710, 5339424, 6674280, 7119232, 8009136, 8899040, 10011420, 10678848, 13348560, 14238464, 16018272, 17798080, 20022840, 21357696, 26697120, 32036544, 35596160, 40045680, 42715392, 53394240, 64073088, 71192320, 80091360, 106788480, 128146176, 160182720, 213576960, 320365440, 640730880]

約数ペア:

[(1, 640730880), (2, 320365440), (3, 213576960), (4, 160182720), (5, 128146176), (6, 106788480), (8, 80091360), (9, 71192320), (10, 64073088), (12, 53394240), (15, 42715392), (16, 40045680), (18, 35596160), (20, 32036544), (24, 26697120), (30, 21357696), (32, 20022840), (36, 17798080), (40, 16018272), (45, 14238464), (48, 13348560), (60, 10678848), (64, 10011420), (72, 8899040), (80, 8009136), (90, 7119232), (96, 6674280), (120, 5339424), (128, 5005710), (144, 4449520), (160, 4004568), (180, 3559616), (192, 3337140), (240, 2669712), (256, 2502855), (288, 2224760), (320, 2002284), (360, 1779808), (384, 1668570), (480, 1334856), (576, 1112380), (640, 1001142), (720, 889904), (768, 834285), (960, 667428), (1152, 556190), (1280, 500571), (1440, 444952), (1920, 333714), (2304, 278095), (2880, 222476), (3840, 166857), (5760, 111238), (11520, 55619)]