21556520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23431}}^1$

素因数の和:23465

約数の個数: 32

約数和(自身を含む): 50613120

約数和(自身を除く): 29056600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23431, 46862, 93724, 117155, 187448, 234310, 468620, 538913, 937240, 1077826, 2155652, 2694565, 4311304, 5389130, 10778260, 21556520]

約数ペア:

[(1, 21556520), (2, 10778260), (4, 5389130), (5, 4311304), (8, 2694565), (10, 2155652), (20, 1077826), (23, 937240), (40, 538913), (46, 468620), (92, 234310), (115, 187448), (184, 117155), (230, 93724), (460, 46862), (920, 23431)]