280020

素因数分解:

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

素因数の和:384

約数の個数: 48

約数和(自身を含む): 846720

約数和(自身を除く): 566700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 359, 390, 718, 780, 1077, 1436, 1795, 2154, 3590, 4308, 4667, 5385, 7180, 9334, 10770, 14001, 18668, 21540, 23335, 28002, 46670, 56004, 70005, 93340, 140010, 280020]

約数ペア:

[(1, 280020), (2, 140010), (3, 93340), (4, 70005), (5, 56004), (6, 46670), (10, 28002), (12, 23335), (13, 21540), (15, 18668), (20, 14001), (26, 10770), (30, 9334), (39, 7180), (52, 5385), (60, 4667), (65, 4308), (78, 3590), (130, 2154), (156, 1795), (195, 1436), (260, 1077), (359, 780), (390, 718)]