20654529

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 13819071

約数列:

[1, 3, 7, 21, 23, 41, 49, 69, 123, 147, 149, 161, 287, 447, 483, 861, 943, 1043, 1127, 2009, 2829, 3129, 3381, 3427, 6027, 6109, 6601, 7301, 10281, 18327, 19803, 21903, 23989, 42763, 46207, 71967, 128289, 138621, 140507, 167923, 299341, 421521, 503769, 898023, 983549, 2950647, 6884843, 20654529]

約数ペア:

[(1, 20654529), (3, 6884843), (7, 2950647), (21, 983549), (23, 898023), (41, 503769), (49, 421521), (69, 299341), (123, 167923), (147, 140507), (149, 138621), (161, 128289), (287, 71967), (447, 46207), (483, 42763), (861, 23989), (943, 21903), (1043, 19803), (1127, 18327), (2009, 10281), (2829, 7301), (3129, 6601), (3381, 6109), (3427, 6027)]