20758784

素因数分解:

$2^8\times {\mathrm{131}}^1\times {\mathrm{619}}^1$

素因数の和:766

約数の個数: 36

約数和(自身を含む): 41820240

約数和(自身を除く): 21061456

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 131, 256, 262, 524, 619, 1048, 1238, 2096, 2476, 4192, 4952, 8384, 9904, 16768, 19808, 33536, 39616, 79232, 81089, 158464, 162178, 324356, 648712, 1297424, 2594848, 5189696, 10379392, 20758784]

約数ペア:

[(1, 20758784), (2, 10379392), (4, 5189696), (8, 2594848), (16, 1297424), (32, 648712), (64, 324356), (128, 162178), (131, 158464), (256, 81089), (262, 79232), (524, 39616), (619, 33536), (1048, 19808), (1238, 16768), (2096, 9904), (2476, 8384), (4192, 4952)]