13131755

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:89

約数の個数: 64

約数和(自身を含む): 21504000

約数和(自身を除く): 8372245

約数列:

[1, 5, 7, 13, 19, 31, 35, 49, 65, 91, 95, 133, 155, 217, 245, 247, 343, 403, 455, 589, 637, 665, 931, 1085, 1235, 1519, 1715, 1729, 2015, 2821, 2945, 3185, 4123, 4459, 4655, 6517, 7595, 7657, 8645, 10633, 12103, 14105, 19747, 20615, 22295, 28861, 32585, 38285, 53165, 53599, 60515, 84721, 98735, 138229, 144305, 202027, 267995, 375193, 423605, 691145, 1010135, 1875965, 2626351, 13131755]

約数ペア:

[(1, 13131755), (5, 2626351), (7, 1875965), (13, 1010135), (19, 691145), (31, 423605), (35, 375193), (49, 267995), (65, 202027), (91, 144305), (95, 138229), (133, 98735), (155, 84721), (217, 60515), (245, 53599), (247, 53165), (343, 38285), (403, 32585), (455, 28861), (589, 22295), (637, 20615), (665, 19747), (931, 14105), (1085, 12103), (1235, 10633), (1519, 8645), (1715, 7657), (1729, 7595), (2015, 6517), (2821, 4655), (2945, 4459), (3185, 4123)]