13241420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 28939680

約数和(自身を除く): 15698260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 173, 178, 215, 346, 356, 430, 445, 692, 860, 865, 890, 1730, 1780, 3460, 3827, 7439, 7654, 14878, 15308, 15397, 19135, 29756, 30794, 37195, 38270, 61588, 74390, 76540, 76985, 148780, 153970, 307940, 662071, 1324142, 2648284, 3310355, 6620710, 13241420]

約数ペア:

[(1, 13241420), (2, 6620710), (4, 3310355), (5, 2648284), (10, 1324142), (20, 662071), (43, 307940), (86, 153970), (89, 148780), (172, 76985), (173, 76540), (178, 74390), (215, 61588), (346, 38270), (356, 37195), (430, 30794), (445, 29756), (692, 19135), (860, 15397), (865, 15308), (890, 14878), (1730, 7654), (1780, 7439), (3460, 3827)]