203488840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{523}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 468581760

約数和(自身を除く): 265092920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 274, 284, 355, 523, 548, 568, 685, 710, 1046, 1096, 1370, 1420, 2092, 2615, 2740, 2840, 4184, 5230, 5480, 9727, 10460, 19454, 20920, 37133, 38908, 48635, 71651, 74266, 77816, 97270, 143302, 148532, 185665, 194540, 286604, 297064, 358255, 371330, 389080, 573208, 716510, 742660, 1433020, 1485320, 2866040, 5087221, 10174442, 20348884, 25436105, 40697768, 50872210, 101744420, 203488840]

約数ペア:

[(1, 203488840), (2, 101744420), (4, 50872210), (5, 40697768), (8, 25436105), (10, 20348884), (20, 10174442), (40, 5087221), (71, 2866040), (137, 1485320), (142, 1433020), (274, 742660), (284, 716510), (355, 573208), (523, 389080), (548, 371330), (568, 358255), (685, 297064), (710, 286604), (1046, 194540), (1096, 185665), (1370, 148532), (1420, 143302), (2092, 97270), (2615, 77816), (2740, 74266), (2840, 71651), (4184, 48635), (5230, 38908), (5480, 37133), (9727, 20920), (10460, 19454)]