20900985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2971}}^1$

素因数の和:3053

約数の個数: 32

約数和(自身を含む): 38802432

約数和(自身を除く): 17901447

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 2971, 7035, 8913, 14855, 20797, 44565, 62391, 103985, 199057, 311955, 597171, 995285, 1393399, 2985855, 4180197, 6966995, 20900985]

約数ペア:

[(1, 20900985), (3, 6966995), (5, 4180197), (7, 2985855), (15, 1393399), (21, 995285), (35, 597171), (67, 311955), (105, 199057), (201, 103985), (335, 62391), (469, 44565), (1005, 20797), (1407, 14855), (2345, 8913), (2971, 7035)]