12997985

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:103

約数の個数: 64

約数和(自身を含む): 21772800

約数和(自身を除く): 8774815

約数列:

[1, 5, 7, 11, 13, 35, 49, 53, 55, 65, 77, 91, 143, 245, 265, 343, 371, 385, 455, 539, 583, 637, 689, 715, 1001, 1715, 1855, 2597, 2695, 2915, 3185, 3445, 3773, 4081, 4459, 4823, 5005, 7007, 7579, 12985, 18179, 18865, 20405, 22295, 24115, 28567, 33761, 35035, 37895, 49049, 53053, 90895, 142835, 168805, 199969, 236327, 245245, 265265, 371371, 999845, 1181635, 1856855, 2599597, 12997985]

約数ペア:

[(1, 12997985), (5, 2599597), (7, 1856855), (11, 1181635), (13, 999845), (35, 371371), (49, 265265), (53, 245245), (55, 236327), (65, 199969), (77, 168805), (91, 142835), (143, 90895), (245, 53053), (265, 49049), (343, 37895), (371, 35035), (385, 33761), (455, 28567), (539, 24115), (583, 22295), (637, 20405), (689, 18865), (715, 18179), (1001, 12985), (1715, 7579), (1855, 7007), (2597, 5005), (2695, 4823), (2915, 4459), (3185, 4081), (3445, 3773)]