21465712

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13831}}^1$

素因数の和:13936

約数の個数: 20

約数和(自身を含む): 42021616

約数和(自身を除く): 20555904

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13831, 27662, 55324, 110648, 221296, 1341607, 2683214, 5366428, 10732856, 21465712]

約数ペア:

[(1, 21465712), (2, 10732856), (4, 5366428), (8, 2683214), (16, 1341607), (97, 221296), (194, 110648), (388, 55324), (776, 27662), (1552, 13831)]