20953712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{769}}^1$

素因数の和:921

約数の個数: 40

約数和(自身を含む): 44111760

約数和(自身を除く): 23158048

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 131, 208, 262, 524, 769, 1048, 1538, 1703, 2096, 3076, 3406, 6152, 6812, 9997, 12304, 13624, 19994, 27248, 39988, 79976, 100739, 159952, 201478, 402956, 805912, 1309607, 1611824, 2619214, 5238428, 10476856, 20953712]

約数ペア:

[(1, 20953712), (2, 10476856), (4, 5238428), (8, 2619214), (13, 1611824), (16, 1309607), (26, 805912), (52, 402956), (104, 201478), (131, 159952), (208, 100739), (262, 79976), (524, 39988), (769, 27248), (1048, 19994), (1538, 13624), (1703, 12304), (2096, 9997), (3076, 6812), (3406, 6152)]