19636000

素因数分解:

$2^5\times 5^3\times {\mathrm{4909}}^1$

素因数の和:4934

約数の個数: 48

約数和(自身を含む): 48255480

約数和(自身を除く): 28619480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 4909, 9818, 19636, 24545, 39272, 49090, 78544, 98180, 122725, 157088, 196360, 245450, 392720, 490900, 613625, 785440, 981800, 1227250, 1963600, 2454500, 3927200, 4909000, 9818000, 19636000]

約数ペア:

[(1, 19636000), (2, 9818000), (4, 4909000), (5, 3927200), (8, 2454500), (10, 1963600), (16, 1227250), (20, 981800), (25, 785440), (32, 613625), (40, 490900), (50, 392720), (80, 245450), (100, 196360), (125, 157088), (160, 122725), (200, 98180), (250, 78544), (400, 49090), (500, 39272), (800, 24545), (1000, 19636), (2000, 9818), (4000, 4909)]