21000979287

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{971}}^1\times {\mathrm{58613}}^1$

素因数の和:59631

約数の個数: 24

約数和(自身を含む): 31107153168

約数和(自身を除く): 10106173881

約数列:

[1, 3, 9, 41, 123, 369, 971, 2913, 8739, 39811, 58613, 119433, 175839, 358299, 527517, 2403133, 7209399, 21628197, 56913223, 170739669, 512219007, 2333442143, 7000326429, 21000979287]

約数ペア:

[(1, 21000979287), (3, 7000326429), (9, 2333442143), (41, 512219007), (123, 170739669), (369, 56913223), (971, 21628197), (2913, 7209399), (8739, 2403133), (39811, 527517), (58613, 358299), (119433, 175839)]