20512971388

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{6367}}^1$

素因数の和:6611

約数の個数: 96

約数和(自身を含む): 45292068864

約数和(自身を除く): 24779097476

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 91, 106, 167, 182, 212, 334, 364, 371, 668, 689, 742, 1169, 1378, 1484, 2171, 2338, 2756, 4342, 4676, 4823, 6367, 8684, 8851, 9646, 12734, 15197, 17702, 19292, 25468, 30394, 35404, 44569, 60788, 61957, 82771, 89138, 115063, 123914, 165542, 178276, 230126, 247828, 331084, 337451, 460252, 579397, 674902, 805441, 1063289, 1158794, 1349804, 1610882, 2126578, 2317588, 2362157, 3221764, 4253156, 4386863, 4724314, 7443023, 8773726, 9448628, 13822757, 14886046, 17547452, 27645514, 29772092, 30708041, 55291028, 56354317, 61416082, 96759299, 112708634, 122832164, 193518598, 225417268, 387037196, 394480219, 732606121, 788960438, 1465212242, 1577920876, 2930424484, 5128242847, 10256485694, 20512971388]

約数ペア:

[(1, 20512971388), (2, 10256485694), (4, 5128242847), (7, 2930424484), (13, 1577920876), (14, 1465212242), (26, 788960438), (28, 732606121), (52, 394480219), (53, 387037196), (91, 225417268), (106, 193518598), (167, 122832164), (182, 112708634), (212, 96759299), (334, 61416082), (364, 56354317), (371, 55291028), (668, 30708041), (689, 29772092), (742, 27645514), (1169, 17547452), (1378, 14886046), (1484, 13822757), (2171, 9448628), (2338, 8773726), (2756, 7443023), (4342, 4724314), (4676, 4386863), (4823, 4253156), (6367, 3221764), (8684, 2362157), (8851, 2317588), (9646, 2126578), (12734, 1610882), (15197, 1349804), (17702, 1158794), (19292, 1063289), (25468, 805441), (30394, 674902), (35404, 579397), (44569, 460252), (60788, 337451), (61957, 331084), (82771, 247828), (89138, 230126), (115063, 178276), (123914, 165542)]