20931976

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{4909}}^1$

素因数の和:4969

約数の個数: 32

約数和(自身を含む): 43306200

約数和(自身を除く): 22374224

約数列:

[1, 2, 4, 8, 13, 26, 41, 52, 82, 104, 164, 328, 533, 1066, 2132, 4264, 4909, 9818, 19636, 39272, 63817, 127634, 201269, 255268, 402538, 510536, 805076, 1610152, 2616497, 5232994, 10465988, 20931976]

約数ペア:

[(1, 20931976), (2, 10465988), (4, 5232994), (8, 2616497), (13, 1610152), (26, 805076), (41, 510536), (52, 402538), (82, 255268), (104, 201269), (164, 127634), (328, 63817), (533, 39272), (1066, 19636), (2132, 9818), (4264, 4909)]