10820180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 27013896

約数和(自身を除く): 16193716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 181, 196, 244, 245, 305, 362, 427, 490, 610, 724, 854, 905, 980, 1220, 1267, 1708, 1810, 2135, 2534, 2989, 3620, 4270, 5068, 5978, 6335, 8540, 8869, 11041, 11956, 12670, 14945, 17738, 22082, 25340, 29890, 35476, 44164, 44345, 55205, 59780, 77287, 88690, 110410, 154574, 177380, 220820, 309148, 386435, 541009, 772870, 1082018, 1545740, 2164036, 2705045, 5410090, 10820180]

約数ペア:

[(1, 10820180), (2, 5410090), (4, 2705045), (5, 2164036), (7, 1545740), (10, 1082018), (14, 772870), (20, 541009), (28, 386435), (35, 309148), (49, 220820), (61, 177380), (70, 154574), (98, 110410), (122, 88690), (140, 77287), (181, 59780), (196, 55205), (244, 44345), (245, 44164), (305, 35476), (362, 29890), (427, 25340), (490, 22082), (610, 17738), (724, 14945), (854, 12670), (905, 11956), (980, 11041), (1220, 8869), (1267, 8540), (1708, 6335), (1810, 5978), (2135, 5068), (2534, 4270), (2989, 3620)]