20958872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 45390240

約数和(自身を除く): 24431368

約数列:

[1, 2, 4, 8, 11, 22, 37, 41, 44, 74, 82, 88, 148, 157, 164, 296, 314, 328, 407, 451, 628, 814, 902, 1256, 1517, 1628, 1727, 1804, 3034, 3256, 3454, 3608, 5809, 6068, 6437, 6908, 11618, 12136, 12874, 13816, 16687, 23236, 25748, 33374, 46472, 51496, 63899, 66748, 70807, 127798, 133496, 141614, 238169, 255596, 283228, 476338, 511192, 566456, 952676, 1905352, 2619859, 5239718, 10479436, 20958872]

約数ペア:

[(1, 20958872), (2, 10479436), (4, 5239718), (8, 2619859), (11, 1905352), (22, 952676), (37, 566456), (41, 511192), (44, 476338), (74, 283228), (82, 255596), (88, 238169), (148, 141614), (157, 133496), (164, 127798), (296, 70807), (314, 66748), (328, 63899), (407, 51496), (451, 46472), (628, 33374), (814, 25748), (902, 23236), (1256, 16687), (1517, 13816), (1628, 12874), (1727, 12136), (1804, 11618), (3034, 6908), (3256, 6437), (3454, 6068), (3608, 5809)]