21429555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{499}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 39360000

約数和(自身を除く): 17930445

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 409, 499, 1227, 1497, 2045, 2495, 2863, 3493, 6135, 7485, 8589, 10479, 14315, 17465, 42945, 52395, 204091, 612273, 1020455, 1428637, 3061365, 4285911, 7143185, 21429555]

約数ペア:

[(1, 21429555), (3, 7143185), (5, 4285911), (7, 3061365), (15, 1428637), (21, 1020455), (35, 612273), (105, 204091), (409, 52395), (499, 42945), (1227, 17465), (1497, 14315), (2045, 10479), (2495, 8589), (2863, 7485), (3493, 6135)]