19920896

素因数分解:

$2^{11}\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 40687920

約数和(自身を除く): 20767024

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 137, 142, 256, 274, 284, 512, 548, 568, 1024, 1096, 1136, 2048, 2192, 2272, 4384, 4544, 8768, 9088, 9727, 17536, 18176, 19454, 35072, 36352, 38908, 70144, 72704, 77816, 140288, 145408, 155632, 280576, 311264, 622528, 1245056, 2490112, 4980224, 9960448, 19920896]

約数ペア:

[(1, 19920896), (2, 9960448), (4, 4980224), (8, 2490112), (16, 1245056), (32, 622528), (64, 311264), (71, 280576), (128, 155632), (137, 145408), (142, 140288), (256, 77816), (274, 72704), (284, 70144), (512, 38908), (548, 36352), (568, 35072), (1024, 19454), (1096, 18176), (1136, 17536), (2048, 9727), (2192, 9088), (2272, 8768), (4384, 4544)]