19874590

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:396

約数の個数: 32

約数和(自身を含む): 36663840

約数和(自身を除く): 16789250

約数列:

[1, 2, 5, 10, 89, 137, 163, 178, 274, 326, 445, 685, 815, 890, 1370, 1630, 12193, 14507, 22331, 24386, 29014, 44662, 60965, 72535, 111655, 121930, 145070, 223310, 1987459, 3974918, 9937295, 19874590]

約数ペア:

[(1, 19874590), (2, 9937295), (5, 3974918), (10, 1987459), (89, 223310), (137, 145070), (163, 121930), (178, 111655), (274, 72535), (326, 60965), (445, 44662), (685, 29014), (815, 24386), (890, 22331), (1370, 14507), (1630, 12193)]