20642816

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{1061}}^1$

素因数の和:1100

約数の個数: 44

約数和(自身を含む): 43478280

約数和(自身を除く): 22835464

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1024, 1061, 1216, 2122, 2432, 4244, 4864, 8488, 9728, 16976, 19456, 20159, 33952, 40318, 67904, 80636, 135808, 161272, 271616, 322544, 543232, 645088, 1086464, 1290176, 2580352, 5160704, 10321408, 20642816]

約数ペア:

[(1, 20642816), (2, 10321408), (4, 5160704), (8, 2580352), (16, 1290176), (19, 1086464), (32, 645088), (38, 543232), (64, 322544), (76, 271616), (128, 161272), (152, 135808), (256, 80636), (304, 67904), (512, 40318), (608, 33952), (1024, 20159), (1061, 19456), (1216, 16976), (2122, 9728), (2432, 8488), (4244, 4864)]