21751215

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{941}}^1$

素因数の和:1039

約数の個数: 32

約数和(自身を含む): 36896256

約数和(自身を除く): 15145041

約数列:

[1, 3, 5, 15, 23, 67, 69, 115, 201, 335, 345, 941, 1005, 1541, 2823, 4623, 4705, 7705, 14115, 21643, 23115, 63047, 64929, 108215, 189141, 315235, 324645, 945705, 1450081, 4350243, 7250405, 21751215]

約数ペア:

[(1, 21751215), (3, 7250405), (5, 4350243), (15, 1450081), (23, 945705), (67, 324645), (69, 315235), (115, 189141), (201, 108215), (335, 64929), (345, 63047), (941, 23115), (1005, 21643), (1541, 14115), (2823, 7705), (4623, 4705)]