20156675

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 32116992

約数和(自身を除く): 11960317

約数列:

[1, 5, 7, 11, 25, 35, 37, 55, 77, 175, 185, 259, 275, 283, 385, 407, 925, 1295, 1415, 1925, 1981, 2035, 2849, 3113, 6475, 7075, 9905, 10175, 10471, 14245, 15565, 21791, 49525, 52355, 71225, 73297, 77825, 108955, 115181, 261775, 366485, 544775, 575905, 806267, 1832425, 2879525, 4031335, 20156675]

約数ペア:

[(1, 20156675), (5, 4031335), (7, 2879525), (11, 1832425), (25, 806267), (35, 575905), (37, 544775), (55, 366485), (77, 261775), (175, 115181), (185, 108955), (259, 77825), (275, 73297), (283, 71225), (385, 52355), (407, 49525), (925, 21791), (1295, 15565), (1415, 14245), (1925, 10471), (1981, 10175), (2035, 9905), (2849, 7075), (3113, 6475)]