21135928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{521}}^1$

素因数の和:999

約数の個数: 32

約数和(自身を含む): 43409520

約数和(自身を除く): 22273592

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 461, 521, 922, 1042, 1844, 2084, 3688, 4168, 5071, 5731, 10142, 11462, 20284, 22924, 40568, 45848, 240181, 480362, 960724, 1921448, 2641991, 5283982, 10567964, 21135928]

約数ペア:

[(1, 21135928), (2, 10567964), (4, 5283982), (8, 2641991), (11, 1921448), (22, 960724), (44, 480362), (88, 240181), (461, 45848), (521, 40568), (922, 22924), (1042, 20284), (1844, 11462), (2084, 10142), (3688, 5731), (4168, 5071)]