78580000

素因数分解:

$2^5\times 5^4\times {\mathrm{3929}}^1$

素因数の和:3959

約数の個数: 60

約数和(自身を含む): 193367790

約数和(自身を除く): 114787790

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 3929, 4000, 5000, 7858, 10000, 15716, 19645, 20000, 31432, 39290, 62864, 78580, 98225, 125728, 157160, 196450, 314320, 392900, 491125, 628640, 785800, 982250, 1571600, 1964500, 2455625, 3143200, 3929000, 4911250, 7858000, 9822500, 15716000, 19645000, 39290000, 78580000]

約数ペア:

[(1, 78580000), (2, 39290000), (4, 19645000), (5, 15716000), (8, 9822500), (10, 7858000), (16, 4911250), (20, 3929000), (25, 3143200), (32, 2455625), (40, 1964500), (50, 1571600), (80, 982250), (100, 785800), (125, 628640), (160, 491125), (200, 392900), (250, 314320), (400, 196450), (500, 157160), (625, 125728), (800, 98225), (1000, 78580), (1250, 62864), (2000, 39290), (2500, 31432), (3929, 20000), (4000, 19645), (5000, 15716), (7858, 10000)]