21787744

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{331}}^1$

素因数の和:380

約数の個数: 72

約数和(自身を含む): 50072904

約数和(自身を除く): 28285160

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 68, 88, 121, 136, 176, 187, 242, 272, 331, 352, 374, 484, 544, 662, 748, 968, 1324, 1496, 1936, 2057, 2648, 2992, 3641, 3872, 4114, 5296, 5627, 5984, 7282, 8228, 10592, 11254, 14564, 16456, 22508, 29128, 32912, 40051, 45016, 58256, 61897, 65824, 80102, 90032, 116512, 123794, 160204, 180064, 247588, 320408, 495176, 640816, 680867, 990352, 1281632, 1361734, 1980704, 2723468, 5446936, 10893872, 21787744]

約数ペア:

[(1, 21787744), (2, 10893872), (4, 5446936), (8, 2723468), (11, 1980704), (16, 1361734), (17, 1281632), (22, 990352), (32, 680867), (34, 640816), (44, 495176), (68, 320408), (88, 247588), (121, 180064), (136, 160204), (176, 123794), (187, 116512), (242, 90032), (272, 80102), (331, 65824), (352, 61897), (374, 58256), (484, 45016), (544, 40051), (662, 32912), (748, 29128), (968, 22508), (1324, 16456), (1496, 14564), (1936, 11254), (2057, 10592), (2648, 8228), (2992, 7282), (3641, 5984), (3872, 5627), (4114, 5296)]