20438260

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 45230976

約数和(自身を除く): 24792716

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 283, 314, 460, 566, 628, 785, 1132, 1415, 1570, 2830, 3140, 3611, 5660, 6509, 7222, 13018, 14444, 18055, 26036, 32545, 36110, 44431, 65090, 72220, 88862, 130180, 177724, 222155, 444310, 888620, 1021913, 2043826, 4087652, 5109565, 10219130, 20438260]

約数ペア:

[(1, 20438260), (2, 10219130), (4, 5109565), (5, 4087652), (10, 2043826), (20, 1021913), (23, 888620), (46, 444310), (92, 222155), (115, 177724), (157, 130180), (230, 88862), (283, 72220), (314, 65090), (460, 44431), (566, 36110), (628, 32545), (785, 26036), (1132, 18055), (1415, 14444), (1570, 13018), (2830, 7222), (3140, 6509), (3611, 5660)]