20854784

素因数分解:

$2^{11}\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 44226000

約数和(自身を除く): 23371216

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 512, 544, 599, 1024, 1088, 1198, 2048, 2176, 2396, 4352, 4792, 8704, 9584, 10183, 17408, 19168, 20366, 34816, 38336, 40732, 76672, 81464, 153344, 162928, 306688, 325856, 613376, 651712, 1226752, 1303424, 2606848, 5213696, 10427392, 20854784]

約数ペア:

[(1, 20854784), (2, 10427392), (4, 5213696), (8, 2606848), (16, 1303424), (17, 1226752), (32, 651712), (34, 613376), (64, 325856), (68, 306688), (128, 162928), (136, 153344), (256, 81464), (272, 76672), (512, 40732), (544, 38336), (599, 34816), (1024, 20366), (1088, 19168), (1198, 17408), (2048, 10183), (2176, 9584), (2396, 8704), (4352, 4792)]