78770000

素因数分解:

$2^4\times 5^4\times {\mathrm{7877}}^1$

素因数の和:7905

約数の個数: 50

約数和(自身を含む): 190734258

約数和(自身を除く): 111964258

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 7877, 10000, 15754, 31508, 39385, 63016, 78770, 126032, 157540, 196925, 315080, 393850, 630160, 787700, 984625, 1575400, 1969250, 3150800, 3938500, 4923125, 7877000, 9846250, 15754000, 19692500, 39385000, 78770000]

約数ペア:

[(1, 78770000), (2, 39385000), (4, 19692500), (5, 15754000), (8, 9846250), (10, 7877000), (16, 4923125), (20, 3938500), (25, 3150800), (40, 1969250), (50, 1575400), (80, 984625), (100, 787700), (125, 630160), (200, 393850), (250, 315080), (400, 196925), (500, 157540), (625, 126032), (1000, 78770), (1250, 63016), (2000, 39385), (2500, 31508), (5000, 15754), (7877, 10000)]