19904775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1049}}^1$

素因数の和:1096

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 17592825

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 165, 253, 275, 345, 575, 759, 825, 1049, 1265, 1725, 3147, 3795, 5245, 6325, 11539, 15735, 18975, 24127, 26225, 34617, 57695, 72381, 78675, 120635, 173085, 265397, 288475, 361905, 603175, 796191, 865425, 1326985, 1809525, 3980955, 6634925, 19904775]

約数ペア:

[(1, 19904775), (3, 6634925), (5, 3980955), (11, 1809525), (15, 1326985), (23, 865425), (25, 796191), (33, 603175), (55, 361905), (69, 288475), (75, 265397), (115, 173085), (165, 120635), (253, 78675), (275, 72381), (345, 57695), (575, 34617), (759, 26225), (825, 24127), (1049, 18975), (1265, 15735), (1725, 11539), (3147, 6325), (3795, 5245)]