21240120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{16091}}^1$

素因数の和:16116

約数の個数: 64

約数和(自身を含む): 69517440

約数和(自身を除く): 48277320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 16091, 32182, 48273, 64364, 80455, 96546, 128728, 160910, 177001, 193092, 241365, 321820, 354002, 386184, 482730, 531003, 643640, 708004, 885005, 965460, 1062006, 1416008, 1770010, 1930920, 2124012, 2655015, 3540020, 4248024, 5310030, 7080040, 10620060, 21240120]

約数ペア:

[(1, 21240120), (2, 10620060), (3, 7080040), (4, 5310030), (5, 4248024), (6, 3540020), (8, 2655015), (10, 2124012), (11, 1930920), (12, 1770010), (15, 1416008), (20, 1062006), (22, 965460), (24, 885005), (30, 708004), (33, 643640), (40, 531003), (44, 482730), (55, 386184), (60, 354002), (66, 321820), (88, 241365), (110, 193092), (120, 177001), (132, 160910), (165, 128728), (220, 96546), (264, 80455), (330, 64364), (440, 48273), (660, 32182), (1320, 16091)]