20085835

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 31764960

約数和(自身を除く): 11679125

約数列:

[1, 5, 7, 11, 29, 35, 49, 55, 77, 145, 203, 245, 257, 319, 385, 539, 1015, 1285, 1421, 1595, 1799, 2233, 2695, 2827, 7105, 7453, 8995, 11165, 12593, 14135, 15631, 19789, 37265, 52171, 62965, 78155, 81983, 98945, 138523, 260855, 365197, 409915, 573881, 692615, 1825985, 2869405, 4017167, 20085835]

約数ペア:

[(1, 20085835), (5, 4017167), (7, 2869405), (11, 1825985), (29, 692615), (35, 573881), (49, 409915), (55, 365197), (77, 260855), (145, 138523), (203, 98945), (245, 81983), (257, 78155), (319, 62965), (385, 52171), (539, 37265), (1015, 19789), (1285, 15631), (1421, 14135), (1595, 12593), (1799, 11165), (2233, 8995), (2695, 7453), (2827, 7105)]