78784000

素因数分解:

$2^9\times 5^3\times {\mathrm{1231}}^1$

素因数の和:1264

約数の個数: 80

約数和(自身を含む): 196612416

約数和(自身を除く): 117828416

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, 512, 640, 800, 1000, 1231, 1280, 1600, 2000, 2462, 2560, 3200, 4000, 4924, 6155, 6400, 8000, 9848, 12310, 12800, 16000, 19696, 24620, 30775, 32000, 39392, 49240, 61550, 64000, 78784, 98480, 123100, 153875, 157568, 196960, 246200, 307750, 315136, 393920, 492400, 615500, 630272, 787840, 984800, 1231000, 1575680, 1969600, 2462000, 3151360, 3939200, 4924000, 7878400, 9848000, 15756800, 19696000, 39392000, 78784000]

約数ペア:

[(1, 78784000), (2, 39392000), (4, 19696000), (5, 15756800), (8, 9848000), (10, 7878400), (16, 4924000), (20, 3939200), (25, 3151360), (32, 2462000), (40, 1969600), (50, 1575680), (64, 1231000), (80, 984800), (100, 787840), (125, 630272), (128, 615500), (160, 492400), (200, 393920), (250, 315136), (256, 307750), (320, 246200), (400, 196960), (500, 157568), (512, 153875), (640, 123100), (800, 98480), (1000, 78784), (1231, 64000), (1280, 61550), (1600, 49240), (2000, 39392), (2462, 32000), (2560, 30775), (3200, 24620), (4000, 19696), (4924, 16000), (6155, 12800), (6400, 12310), (8000, 9848)]