20396272

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 60

約数和(自身を含む): 45157080

約数和(自身を除く): 24760808

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 169, 208, 247, 304, 338, 397, 494, 676, 794, 988, 1352, 1588, 1976, 2704, 3176, 3211, 3952, 5161, 6352, 6422, 7543, 10322, 12844, 15086, 20644, 25688, 30172, 41288, 51376, 60344, 67093, 82576, 98059, 120688, 134186, 196118, 268372, 392236, 536744, 784472, 1073488, 1274767, 1568944, 2549534, 5099068, 10198136, 20396272]

約数ペア:

[(1, 20396272), (2, 10198136), (4, 5099068), (8, 2549534), (13, 1568944), (16, 1274767), (19, 1073488), (26, 784472), (38, 536744), (52, 392236), (76, 268372), (104, 196118), (152, 134186), (169, 120688), (208, 98059), (247, 82576), (304, 67093), (338, 60344), (397, 51376), (494, 41288), (676, 30172), (794, 25688), (988, 20644), (1352, 15086), (1588, 12844), (1976, 10322), (2704, 7543), (3176, 6422), (3211, 6352), (3952, 5161)]