3985000

素因数分解:

$2^3\times 5^4\times {\mathrm{797}}^1$

素因数の和:823

約数の個数: 40

約数和(自身を含む): 9348570

約数和(自身を除く): 5363570

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 797, 1000, 1250, 1594, 2500, 3188, 3985, 5000, 6376, 7970, 15940, 19925, 31880, 39850, 79700, 99625, 159400, 199250, 398500, 498125, 797000, 996250, 1992500, 3985000]

約数ペア:

[(1, 3985000), (2, 1992500), (4, 996250), (5, 797000), (8, 498125), (10, 398500), (20, 199250), (25, 159400), (40, 99625), (50, 79700), (100, 39850), (125, 31880), (200, 19925), (250, 15940), (500, 7970), (625, 6376), (797, 5000), (1000, 3985), (1250, 3188), (1594, 2500)]