20380672

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1531}}^1$

素因数の和:1564

約数の個数: 44

約数和(自身を含む): 43904056

約数和(自身を除く): 23523384

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1531, 1664, 3062, 3328, 6124, 6656, 12248, 13312, 19903, 24496, 39806, 48992, 79612, 97984, 159224, 195968, 318448, 391936, 636896, 783872, 1273792, 1567744, 2547584, 5095168, 10190336, 20380672]

約数ペア:

[(1, 20380672), (2, 10190336), (4, 5095168), (8, 2547584), (13, 1567744), (16, 1273792), (26, 783872), (32, 636896), (52, 391936), (64, 318448), (104, 195968), (128, 159224), (208, 97984), (256, 79612), (416, 48992), (512, 39806), (832, 24496), (1024, 19903), (1531, 13312), (1664, 12248), (3062, 6656), (3328, 6124)]