20547813

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{227}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 11933979

約数列:

[1, 3, 11, 13, 33, 39, 143, 211, 227, 429, 633, 681, 2321, 2497, 2743, 2951, 6963, 7491, 8229, 8853, 30173, 32461, 47897, 90519, 97383, 143691, 526867, 622661, 1580601, 1867983, 6849271, 20547813]

約数ペア:

[(1, 20547813), (3, 6849271), (11, 1867983), (13, 1580601), (33, 622661), (39, 526867), (143, 143691), (211, 97383), (227, 90519), (429, 47897), (633, 32461), (681, 30173), (2321, 8853), (2497, 8229), (2743, 7491), (2951, 6963)]