21100120

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5927}}^1$

素因数の和:6027

約数の個数: 32

約数和(自身を含む): 48016800

約数和(自身を除く): 26916680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5927, 11854, 23708, 29635, 47416, 59270, 118540, 237080, 527503, 1055006, 2110012, 2637515, 4220024, 5275030, 10550060, 21100120]

約数ペア:

[(1, 21100120), (2, 10550060), (4, 5275030), (5, 4220024), (8, 2637515), (10, 2110012), (20, 1055006), (40, 527503), (89, 237080), (178, 118540), (356, 59270), (445, 47416), (712, 29635), (890, 23708), (1780, 11854), (3560, 5927)]