19979596

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 23485364

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 131, 182, 262, 364, 419, 524, 838, 917, 1676, 1703, 1834, 2933, 3406, 3668, 5447, 5866, 6812, 10894, 11732, 11921, 21788, 23842, 38129, 47684, 54889, 76258, 109778, 152516, 219556, 384223, 713557, 768446, 1427114, 1536892, 2854228, 4994899, 9989798, 19979596]

約数ペア:

[(1, 19979596), (2, 9989798), (4, 4994899), (7, 2854228), (13, 1536892), (14, 1427114), (26, 768446), (28, 713557), (52, 384223), (91, 219556), (131, 152516), (182, 109778), (262, 76258), (364, 54889), (419, 47684), (524, 38129), (838, 23842), (917, 21788), (1676, 11921), (1703, 11732), (1834, 10894), (2933, 6812), (3406, 5866), (3668, 5447)]