21984705

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8009}}^1$

素因数の和:8081

約数の個数: 24

約数和(自身を含む): 38736360

約数和(自身を除く): 16751655

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 8009, 24027, 40045, 72081, 120135, 360405, 488549, 1465647, 2442745, 4396941, 7328235, 21984705]

約数ペア:

[(1, 21984705), (3, 7328235), (5, 4396941), (9, 2442745), (15, 1465647), (45, 488549), (61, 360405), (183, 120135), (305, 72081), (549, 40045), (915, 24027), (2745, 8009)]