20371455

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 18154305

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 97, 117, 195, 291, 359, 485, 585, 873, 1077, 1261, 1455, 1795, 3231, 3783, 4365, 4667, 5385, 6305, 11349, 14001, 16155, 18915, 23335, 34823, 42003, 56745, 70005, 104469, 174115, 210015, 313407, 452699, 522345, 1358097, 1567035, 2263495, 4074291, 6790485, 20371455]

約数ペア:

[(1, 20371455), (3, 6790485), (5, 4074291), (9, 2263495), (13, 1567035), (15, 1358097), (39, 522345), (45, 452699), (65, 313407), (97, 210015), (117, 174115), (195, 104469), (291, 70005), (359, 56745), (485, 42003), (585, 34823), (873, 23335), (1077, 18915), (1261, 16155), (1455, 14001), (1795, 11349), (3231, 6305), (3783, 5385), (4365, 4667)]