1806140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 4692240

約数和(自身を除く): 2886100

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 97, 98, 133, 140, 190, 194, 196, 245, 266, 380, 388, 485, 490, 532, 665, 679, 931, 970, 980, 1330, 1358, 1843, 1862, 1940, 2660, 2716, 3395, 3686, 3724, 4655, 4753, 6790, 7372, 9215, 9310, 9506, 12901, 13580, 18430, 18620, 19012, 23765, 25802, 36860, 47530, 51604, 64505, 90307, 95060, 129010, 180614, 258020, 361228, 451535, 903070, 1806140]

約数ペア:

[(1, 1806140), (2, 903070), (4, 451535), (5, 361228), (7, 258020), (10, 180614), (14, 129010), (19, 95060), (20, 90307), (28, 64505), (35, 51604), (38, 47530), (49, 36860), (70, 25802), (76, 23765), (95, 19012), (97, 18620), (98, 18430), (133, 13580), (140, 12901), (190, 9506), (194, 9310), (196, 9215), (245, 7372), (266, 6790), (380, 4753), (388, 4655), (485, 3724), (490, 3686), (532, 3395), (665, 2716), (679, 2660), (931, 1940), (970, 1862), (980, 1843), (1330, 1358)]