28656740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1913}}^1$

素因数の和:2036

約数の個数: 48

約数和(自身を含む): 69455232

約数和(自身を除く): 40798492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1498, 1913, 2140, 2996, 3745, 3826, 7490, 7652, 9565, 13391, 14980, 19130, 26782, 38260, 53564, 66955, 133910, 204691, 267820, 409382, 818764, 1023455, 1432837, 2046910, 2865674, 4093820, 5731348, 7164185, 14328370, 28656740]

約数ペア:

[(1, 28656740), (2, 14328370), (4, 7164185), (5, 5731348), (7, 4093820), (10, 2865674), (14, 2046910), (20, 1432837), (28, 1023455), (35, 818764), (70, 409382), (107, 267820), (140, 204691), (214, 133910), (428, 66955), (535, 53564), (749, 38260), (1070, 26782), (1498, 19130), (1913, 14980), (2140, 13391), (2996, 9565), (3745, 7652), (3826, 7490)]