20911485

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 40646016

約数和(自身を除く): 19734531

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 1237, 2415, 3381, 3711, 5635, 6185, 8659, 16905, 18555, 25977, 28451, 43295, 60613, 85353, 129885, 142255, 181839, 199157, 303065, 426765, 597471, 909195, 995785, 1394099, 2987355, 4182297, 6970495, 20911485]

約数ペア:

[(1, 20911485), (3, 6970495), (5, 4182297), (7, 2987355), (15, 1394099), (21, 995785), (23, 909195), (35, 597471), (49, 426765), (69, 303065), (105, 199157), (115, 181839), (147, 142255), (161, 129885), (245, 85353), (345, 60613), (483, 43295), (735, 28451), (805, 25977), (1127, 18555), (1237, 16905), (2415, 8659), (3381, 6185), (3711, 5635)]