20123021456

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{1999}}^1\times {\mathrm{2239}}^1$

素因数の和:4527

約数の個数: 40

約数和(自身を含む): 39164160000

約数和(自身を除く): 19041138544

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 1999, 2239, 2248, 3998, 4478, 4496, 7996, 8956, 15992, 17912, 31984, 35824, 561719, 629159, 1123438, 1258318, 2246876, 2516636, 4475761, 4493752, 5033272, 8951522, 8987504, 10066544, 17903044, 35806088, 71612176, 1257688841, 2515377682, 5030755364, 10061510728, 20123021456]

約数ペア:

[(1, 20123021456), (2, 10061510728), (4, 5030755364), (8, 2515377682), (16, 1257688841), (281, 71612176), (562, 35806088), (1124, 17903044), (1999, 10066544), (2239, 8987504), (2248, 8951522), (3998, 5033272), (4478, 4493752), (4496, 4475761), (7996, 2516636), (8956, 2246876), (15992, 1258318), (17912, 1123438), (31984, 629159), (35824, 561719)]