21131898

素因数分解:

$2^1\times 3^1\times {\mathrm{401}}^1\times {\mathrm{8783}}^1$

素因数の和:9189

約数の個数: 16

約数和(自身を含む): 42374016

約数和(自身を除く): 21242118

約数列:

[1, 2, 3, 6, 401, 802, 1203, 2406, 8783, 17566, 26349, 52698, 3521983, 7043966, 10565949, 21131898]

約数ペア:

[(1, 21131898), (2, 10565949), (3, 7043966), (6, 3521983), (401, 52698), (802, 26349), (1203, 17566), (2406, 8783)]