12016780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 26278560

約数和(自身を除く): 14261780

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 157, 172, 178, 215, 314, 356, 430, 445, 628, 785, 860, 890, 1570, 1780, 3140, 3827, 6751, 7654, 13502, 13973, 15308, 19135, 27004, 27946, 33755, 38270, 55892, 67510, 69865, 76540, 135020, 139730, 279460, 600839, 1201678, 2403356, 3004195, 6008390, 12016780]

約数ペア:

[(1, 12016780), (2, 6008390), (4, 3004195), (5, 2403356), (10, 1201678), (20, 600839), (43, 279460), (86, 139730), (89, 135020), (157, 76540), (172, 69865), (178, 67510), (215, 55892), (314, 38270), (356, 33755), (430, 27946), (445, 27004), (628, 19135), (785, 15308), (860, 13973), (890, 13502), (1570, 7654), (1780, 6751), (3140, 3827)]