16919721

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 30599296

約数和(自身を除く): 13679575

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 73, 91, 117, 219, 273, 283, 511, 657, 819, 849, 949, 1533, 1981, 2547, 2847, 3679, 4599, 5943, 6643, 8541, 11037, 17829, 19929, 20659, 25753, 33111, 59787, 61977, 77259, 144613, 185931, 231777, 268567, 433839, 805701, 1301517, 1879969, 2417103, 5639907, 16919721]

約数ペア:

[(1, 16919721), (3, 5639907), (7, 2417103), (9, 1879969), (13, 1301517), (21, 805701), (39, 433839), (63, 268567), (73, 231777), (91, 185931), (117, 144613), (219, 77259), (273, 61977), (283, 59787), (511, 33111), (657, 25753), (819, 20659), (849, 19929), (949, 17829), (1533, 11037), (1981, 8541), (2547, 6643), (2847, 5943), (3679, 4599)]