21365405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{941}}^1$

素因数の和:1204

約数の個数: 16

約数和(自身を含む): 27129600

約数和(自身を除く): 5764195

約数列:

[1, 5, 19, 95, 239, 941, 1195, 4541, 4705, 17879, 22705, 89395, 224899, 1124495, 4273081, 21365405]

約数ペア:

[(1, 21365405), (5, 4273081), (19, 1124495), (95, 224899), (239, 89395), (941, 22705), (1195, 17879), (4541, 4705)]