18441640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{97}}^2$

素因数の和:219

約数の個数: 72

約数和(自身を含む): 48770910

約数和(自身を除く): 30329270

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 97, 98, 140, 194, 196, 245, 280, 388, 392, 485, 490, 679, 776, 970, 980, 1358, 1940, 1960, 2716, 3395, 3880, 4753, 5432, 6790, 9409, 9506, 13580, 18818, 19012, 23765, 27160, 37636, 38024, 47045, 47530, 65863, 75272, 94090, 95060, 131726, 188180, 190120, 263452, 329315, 376360, 461041, 526904, 658630, 922082, 1317260, 1844164, 2305205, 2634520, 3688328, 4610410, 9220820, 18441640]

約数ペア:

[(1, 18441640), (2, 9220820), (4, 4610410), (5, 3688328), (7, 2634520), (8, 2305205), (10, 1844164), (14, 1317260), (20, 922082), (28, 658630), (35, 526904), (40, 461041), (49, 376360), (56, 329315), (70, 263452), (97, 190120), (98, 188180), (140, 131726), (194, 95060), (196, 94090), (245, 75272), (280, 65863), (388, 47530), (392, 47045), (485, 38024), (490, 37636), (679, 27160), (776, 23765), (970, 19012), (980, 18818), (1358, 13580), (1940, 9506), (1960, 9409), (2716, 6790), (3395, 5432), (3880, 4753)]