21769954

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{1553}}^1$

素因数の和:1761

約数の個数: 16

約数和(自身を含む): 33640992

約数和(自身を除く): 11871038

約数列:

[1, 2, 43, 86, 163, 326, 1553, 3106, 7009, 14018, 66779, 133558, 253139, 506278, 10884977, 21769954]

約数ペア:

[(1, 21769954), (2, 10884977), (43, 506278), (86, 253139), (163, 133558), (326, 66779), (1553, 14018), (3106, 7009)]