19555970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 42197760

約数和(自身を除く): 22641790

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 73, 86, 89, 146, 178, 215, 301, 365, 430, 445, 511, 602, 623, 730, 890, 1022, 1246, 1505, 2555, 3010, 3115, 3139, 3827, 5110, 6230, 6278, 6497, 7654, 12994, 15695, 19135, 21973, 26789, 31390, 32485, 38270, 43946, 45479, 53578, 64970, 90958, 109865, 133945, 219730, 227395, 267890, 279371, 454790, 558742, 1396855, 1955597, 2793710, 3911194, 9777985, 19555970]

約数ペア:

[(1, 19555970), (2, 9777985), (5, 3911194), (7, 2793710), (10, 1955597), (14, 1396855), (35, 558742), (43, 454790), (70, 279371), (73, 267890), (86, 227395), (89, 219730), (146, 133945), (178, 109865), (215, 90958), (301, 64970), (365, 53578), (430, 45479), (445, 43946), (511, 38270), (602, 32485), (623, 31390), (730, 26789), (890, 21973), (1022, 19135), (1246, 15695), (1505, 12994), (2555, 7654), (3010, 6497), (3115, 6278), (3139, 6230), (3827, 5110)]