81603850

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 155990016

約数和(自身を除く): 74386166

約数列:

[1, 2, 5, 10, 25, 50, 71, 127, 142, 181, 254, 355, 362, 635, 710, 905, 1270, 1775, 1810, 3175, 3550, 4525, 6350, 9017, 9050, 12851, 18034, 22987, 25702, 45085, 45974, 64255, 90170, 114935, 128510, 225425, 229870, 321275, 450850, 574675, 642550, 1149350, 1632077, 3264154, 8160385, 16320770, 40801925, 81603850]

約数ペア:

[(1, 81603850), (2, 40801925), (5, 16320770), (10, 8160385), (25, 3264154), (50, 1632077), (71, 1149350), (127, 642550), (142, 574675), (181, 450850), (254, 321275), (355, 229870), (362, 225425), (635, 128510), (710, 114935), (905, 90170), (1270, 64255), (1775, 45974), (1810, 45085), (3175, 25702), (3550, 22987), (4525, 18034), (6350, 12851), (9017, 9050)]