20020012

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 35834400

約数和(自身を除く): 15814388

約数列:

[1, 2, 4, 71, 142, 157, 284, 314, 449, 628, 898, 1796, 11147, 22294, 31879, 44588, 63758, 70493, 127516, 140986, 281972, 5005003, 10010006, 20020012]

約数ペア:

[(1, 20020012), (2, 10010006), (4, 5005003), (71, 281972), (142, 140986), (157, 127516), (284, 70493), (314, 63758), (449, 44588), (628, 31879), (898, 22294), (1796, 11147)]