21155760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29383}}^1$

素因数の和:29402

約数の個数: 60

約数和(自身を含む): 71050512

約数和(自身を除く): 49894752

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29383, 58766, 88149, 117532, 146915, 176298, 235064, 264447, 293830, 352596, 440745, 470128, 528894, 587660, 705192, 881490, 1057788, 1175320, 1322235, 1410384, 1762980, 2115576, 2350640, 2644470, 3525960, 4231152, 5288940, 7051920, 10577880, 21155760]

約数ペア:

[(1, 21155760), (2, 10577880), (3, 7051920), (4, 5288940), (5, 4231152), (6, 3525960), (8, 2644470), (9, 2350640), (10, 2115576), (12, 1762980), (15, 1410384), (16, 1322235), (18, 1175320), (20, 1057788), (24, 881490), (30, 705192), (36, 587660), (40, 528894), (45, 470128), (48, 440745), (60, 352596), (72, 293830), (80, 264447), (90, 235064), (120, 176298), (144, 146915), (180, 117532), (240, 88149), (360, 58766), (720, 29383)]