88891990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{2251}}^1$

素因数の和:2628

約数の個数: 32

約数和(自身を含む): 175115520

約数和(自身を除く): 86223530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 359, 718, 1795, 2251, 3590, 3949, 4502, 7898, 11255, 19745, 22510, 24761, 39490, 49522, 123805, 247610, 808109, 1616218, 4040545, 8081090, 8889199, 17778398, 44445995, 88891990]

約数ペア:

[(1, 88891990), (2, 44445995), (5, 17778398), (10, 8889199), (11, 8081090), (22, 4040545), (55, 1616218), (110, 808109), (359, 247610), (718, 123805), (1795, 49522), (2251, 39490), (3590, 24761), (3949, 22510), (4502, 19745), (7898, 11255)]