9911990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{359}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 19595520

約数和(自身を除く): 9683530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 251, 359, 502, 718, 1255, 1795, 2510, 2761, 3590, 3949, 5522, 7898, 13805, 19745, 27610, 39490, 90109, 180218, 450545, 901090, 991199, 1982398, 4955995, 9911990]

約数ペア:

[(1, 9911990), (2, 4955995), (5, 1982398), (10, 991199), (11, 901090), (22, 450545), (55, 180218), (110, 90109), (251, 39490), (359, 27610), (502, 19745), (718, 13805), (1255, 7898), (1795, 5522), (2510, 3949), (2761, 3590)]