21020896

素因数分解:

$2^5\times {\mathrm{13}}^4\times {\mathrm{23}}^1$

素因数の和:85

約数の個数: 60

約数和(自身を含む): 46782792

約数和(自身を除く): 25761896

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 92, 104, 169, 184, 208, 299, 338, 368, 416, 598, 676, 736, 1196, 1352, 2197, 2392, 2704, 3887, 4394, 4784, 5408, 7774, 8788, 9568, 15548, 17576, 28561, 31096, 35152, 50531, 57122, 62192, 70304, 101062, 114244, 124384, 202124, 228488, 404248, 456976, 656903, 808496, 913952, 1313806, 1616992, 2627612, 5255224, 10510448, 21020896]

約数ペア:

[(1, 21020896), (2, 10510448), (4, 5255224), (8, 2627612), (13, 1616992), (16, 1313806), (23, 913952), (26, 808496), (32, 656903), (46, 456976), (52, 404248), (92, 228488), (104, 202124), (169, 124384), (184, 114244), (208, 101062), (299, 70304), (338, 62192), (368, 57122), (416, 50531), (598, 35152), (676, 31096), (736, 28561), (1196, 17576), (1352, 15548), (2197, 9568), (2392, 8788), (2704, 7774), (3887, 5408), (4394, 4784)]