20305215

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21487}}^1$

素因数の和:21508

約数の個数: 32

約数和(自身を含む): 41256960

約数和(自身を除く): 20951745

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21487, 64461, 107435, 150409, 193383, 322305, 451227, 580149, 752045, 966915, 1353681, 2256135, 2900745, 4061043, 6768405, 20305215]

約数ペア:

[(1, 20305215), (3, 6768405), (5, 4061043), (7, 2900745), (9, 2256135), (15, 1353681), (21, 966915), (27, 752045), (35, 580149), (45, 451227), (63, 322305), (105, 193383), (135, 150409), (189, 107435), (315, 64461), (945, 21487)]