19721104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1607}}^1$

素因数の和:1687

約数の個数: 40

約数和(自身を含む): 41872320

約数和(自身を除く): 22151216

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1607, 3068, 3214, 6136, 6428, 12272, 12856, 20891, 25712, 41782, 83564, 94813, 167128, 189626, 334256, 379252, 758504, 1232569, 1517008, 2465138, 4930276, 9860552, 19721104]

約数ペア:

[(1, 19721104), (2, 9860552), (4, 4930276), (8, 2465138), (13, 1517008), (16, 1232569), (26, 758504), (52, 379252), (59, 334256), (104, 189626), (118, 167128), (208, 94813), (236, 83564), (472, 41782), (767, 25712), (944, 20891), (1534, 12856), (1607, 12272), (3068, 6428), (3214, 6136)]