20838784

素因数分解:

$2^7\times {\mathrm{71}}^1\times {\mathrm{2293}}^1$

素因数の和:2378

約数の個数: 32

約数和(自身を含む): 42117840

約数和(自身を除く): 21279056

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 284, 568, 1136, 2272, 2293, 4544, 4586, 9088, 9172, 18344, 36688, 73376, 146752, 162803, 293504, 325606, 651212, 1302424, 2604848, 5209696, 10419392, 20838784]

約数ペア:

[(1, 20838784), (2, 10419392), (4, 5209696), (8, 2604848), (16, 1302424), (32, 651212), (64, 325606), (71, 293504), (128, 162803), (142, 146752), (284, 73376), (568, 36688), (1136, 18344), (2272, 9172), (2293, 9088), (4544, 4586)]