19425505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{641}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 27734400

約数和(自身を除く): 8308895

約数列:

[1, 5, 11, 19, 29, 55, 95, 145, 209, 319, 551, 641, 1045, 1595, 2755, 3205, 6061, 7051, 12179, 18589, 30305, 35255, 60895, 92945, 133969, 204479, 353191, 669845, 1022395, 1765955, 3885101, 19425505]

約数ペア:

[(1, 19425505), (5, 3885101), (11, 1765955), (19, 1022395), (29, 669845), (55, 353191), (95, 204479), (145, 133969), (209, 92945), (319, 60895), (551, 35255), (641, 30305), (1045, 18589), (1595, 12179), (2755, 7051), (3205, 6061)]